Develop Bugs

ATT Note 5 Native Tether/hotspot (NO Root) 6.0.1 MM

I am using an at&t note 5 (sm-920A) i downgraded from Nougat EQC6, 7.0.1 to 6.0.1. MM CPK1 with Binary 4 bootloader. This phone has never been rooted.
I now have access to hotspot in my notifications drop down menu, and USB tethering along with Bluetooth tethering work by just going to the option and switching them on.
My Goal was initially to downgrade to 5.1.1 to get root so i could make use of the Native Tether/Hotspot and other root apps on my ATT Note 5.
I am using this phone on the Straight Talk network.
This is my first how-to and first post. I apologize if i post in the wrong section or am unable to give more help to those in need.
I've searched/googled and although i have found workarounds i have not found any how-to's to get to this end result.
Ive been using my note 5 this way for a few days now with no problems. disabled att bloatware, knox, and system updates with package disabler pro.
With not having any issues, I flashed back to the 6.01 firmware to check my steps and write this how-to. Will update if anything changes.
WARNING!!
Some things i did may be unnessary but were in my process at the time of writing/doing this so are included
I haven't tested everything on this phone.
I don't know if there are any bugs.
I don't know what will happen when updated.
I do not garuntee this will work for you.
I take NO responsibility if your decision to try/do this fails.
The Search button and google were my biggest helpers.
Here is my process as laid out and straight forward as i could think to write it.
Things you will need:
1. N920AUCS4CPK1 posted by droidvoider (https://forum.xda-developers.com/at...lution-samsung-note-5-sm-n920a-error-t3545600 using odin) by droidvoider
2. Odin3 v3.12.10 posted by anycallmongolia (https://forum.xda-developers.com/showthread.php?t=2711451) by anycallmongolia,
3. COMBINATION_FA51_N920AUCU4APL1_CL6053901_QB11816686_REV00_user_mid_noship posted by BE8ST (https://androidfilehost.com/?w=files&flid=124797)
4. N920AUCE2APB2.tar posted by TechNyne66 (https://forum.xda-developers.com/att-galaxy-note5/general/att-note-5-n920a-teather-root-t3356666)
Big Thank you to these guys for posting this stuff, and everything else they post.
I am assuming you know how to put your phone into download mode and use odin in the following instructions. I left my phone connected to my pc with sim card in the entire process.
1. Unzip N920AUCS4CPK1, then Flash using odin. Use all 4 files in their respected spots. nothing else has to be changed hit start.
After reboot I setup up the phone enough to get to settings and enable developer options. making sure to turn on adb debugging and oem unlock. then rebooted to download mode
2. In Odin, Flash N920AUCE2APB2.tar in the BL slot and COMBINATION_FA51_N920AUCU4APL1_CL6053901_QB11816686_REV00_user_mid_noship.tar in the AP slot. (I flashed these two at the same time)
Phone will reboot to binary splash screen then start regularly. For me the phone Played boot music and (vibrated then vibrate twice) repeatedly. Bootloop
If this happens to you as well,
2a. Shut phone off by holding volume down key and power button.
(If you are brought to a screen that says power key long press in yellow with other information below[well call this the info screen, not sure on its proper name],
then power off by holding volume down key and power key again, releasing both when screen goes blank.
2b. When the phone is completly off reboot to recovery by holding volume up key and power key.
Do a factory reset and wipe cache. Then reboot. (If it freezes at cache complete, power off with volume down key and power key).
Holding power button for 10 seconds or more will boot you to info screen again.
3. Your phone should load to a home screen with what looks like a debugging menu as the background.
4. Turn phone off and boot to download mode.
5. In Odin, load BL, AP, and CP from N920AUCS4CPK1. Leave CSC blank. No other options should be changed in Odin.
6. You will reboot to recovery. Use reboot option. dm verity check will start then phone should reboot to normal setup initialization.
7. If for some reason your phone shows the wrong storage size, go to back-up and resert in settings and o a factory data reset mine was showing up as 16gb where as it is 64gb
That was everything i did.
If with straight talk send a text to 611611 with the mesage being apn.
afrter a few minutes they will send a configuration message for browser and mms.
Install both. They should say installed when complete.
For others you will have to input your apn settings manually.
My phone showed H+ for the first few minutes, has been showing 4g ever since.
Just a few thoughts before i post, but are in no way tested or confirmed...
I'm thinking coming from cpk1 full firmware you could just flash the combination file in the AP slot.
Then after reboot to Download mode flash the cpk1 firmware without the CSC file and hve the same result,
but I havnt had a chance to test that yet as i need my phone running, and will soon have to go to work.
The main reason the N920AUCE2APB2.tar file was used was because i was playing around flashing different files it may or may not be needed. further testing is needed. but it was there during this process so i included it. Again I apologize if this could be simplified or if i left anything out. any comments are appreciated positive or negative. Thanks

So i did a little testing. Flash cpk1 all files. Then flash the custom binary and rebooting to download mode. Then flash the cpk1 files again minus the csc file. Leave that slot(csc) empty in odin and it will give you native hotspot and tethering. You get hotspot from notification drop down menu and No more contact att. It will take away the calls over wifi option though.
I will edit this walkthrough (if you canveven call it that) soon to reflect the changes. Thank you for reading.

Badbrane said:
So i did a little testing. Flash cpk1 all files. Then flash the custom binary and rebooting to download mode. Then flash the cpk1 files again minus the csc file. Leave that slot(csc) empty in odin and it will give you native hotspot and tethering. You get hotspot from notification drop down menu and No more contact att. It will take away the calls over wifi option though.
I will edit this walkthrough (if you canveven call it that) soon to reflect the changes. Thank you for reading.
Click to expand...
Click to collapse
https://forum.xda-developers.com/att-galaxy-note5/general/update-t3738023 N920A_N920AUCS4EQL1_ATT_USA_7.0.zip post #2
by huynhlam thank you
[ATT Note 5. on straight talk]
This process also works using this firmware. i updated from cpk1 using my process in post #2. i left out the (csc) and pit file in the N920A_N920AUCS4EQL1_ATT_USA_7.0.zip huynhlam posted in the link above. I am now on 7.0 with native hotspot and mobile hotspot icon in the notification drop down menu working . i can upload pictures but atm im not familiar with the best free file hosting sites so any suggestions would be greatly appreciated. i will keep trying different firmwares and update with results.

Badbrane said:
I am using an at&t note 5 (sm-920A) i downgraded from Nougat EQC6, 7.0.1 to 6.0.1. MM CPK1 with Binary 4 bootloader. This phone has never been rooted.
I now have access to hotspot in my notifications drop down menu, and USB tethering along with Bluetooth tethering work by just going to the option and switching them on.
My Goal was initially to downgrade to 5.1.1 to get root so i could make use of the Native Tether/Hotspot and other root apps on my ATT Note 5.
I am using this phone on the Straight Talk network.
This is my first how-to and first post. I apologize if i post in the wrong section or am unable to give more help to those in need.
I've searched/googled and although i have found workarounds i have not found any how-to's to get to this end result.
Ive been using my note 5 this way for a few days now with no problems. disabled att bloatware, knox, and system updates with package disabler pro.
With not having any issues, I flashed back to the 6.01 firmware to check my steps and write this how-to. Will update if anything changes.
WARNING!!
Some things i did may be unnessary but were in my process at the time of writing/doing this so are included
I haven't tested everything on this phone.
I don't know if there are any bugs.
I don't know what will happen when updated.
I do not garuntee this will work for you.
I take NO responsibility if your decision to try/do this fails.
The Search button and google were my biggest helpers.
Here is my process as laid out and straight forward as i could think to write it.
Things you will need:
1. N920AUCS4CPK1 posted by droidvoider (https://forum.xda-developers.com/at...lution-samsung-note-5-sm-n920a-error-t3545600 using odin) by droidvoider
2. Odin3 v3.12.10 posted by anycallmongolia (https://forum.xda-developers.com/showthread.php?t=2711451) by anycallmongolia,
3. COMBINATION_FA51_N920AUCU4APL1_CL6053901_QB11816686_REV00_user_mid_noship posted by BE8ST (https://androidfilehost.com/?w=files&flid=124797)
4. N920AUCE2APB2.tar posted by TechNyne66 (https://forum.xda-developers.com/att-galaxy-note5/general/att-note-5-n920a-teather-root-t3356666)
Big Thank you to these guys for posting this stuff, and everything else they post.
I am assuming you know how to put your phone into download mode and use odin in the following instructions. I left my phone connected to my pc with sim card in the entire process.
1. Unzip N920AUCS4CPK1, then Flash using odin. Use all 4 files in their respected spots. nothing else has to be changed hit start.
After reboot I setup up the phone enough to get to settings and enable developer options. making sure to turn on adb debugging and oem unlock. then rebooted to download mode
2. In Odin, Flash N920AUCE2APB2.tar in the BL slot and COMBINATION_FA51_N920AUCU4APL1_CL6053901_QB11816686_REV00_user_mid_noship.tar in the AP slot. (I flashed these two at the same time)
Phone will reboot to binary splash screen then start regularly. For me the phone Played boot music and (vibrated then vibrate twice) repeatedly. Bootloop
If this happens to you as well,
2a. Shut phone off by holding volume down key and power button.
(If you are brought to a screen that says power key long press in yellow with other information below[well call this the info screen, not sure on its proper name],
then power off by holding volume down key and power key again, releasing both when screen goes blank.
2b. When the phone is completly off reboot to recovery by holding volume up key and power key.
Do a factory reset and wipe cache. Then reboot. (If it freezes at cache complete, power off with volume down key and power key).
Holding power button for 10 seconds or more will boot you to info screen again.
3. Your phone should load to a home screen with what looks like a debugging menu as the background.
4. Turn phone off and boot to download mode.
5. In Odin, load BL, AP, and CP from N920AUCS4CPK1. Leave CSC blank. No other options should be changed in Odin.
6. You will reboot to recovery. Use reboot option. dm verity check will start then phone should reboot to normal setup initialization.
7. If for some reason your phone shows the wrong storage size, go to back-up and resert in settings and o a factory data reset mine was showing up as 16gb where as it is 64gb
That was everything i did.
If with straight talk send a text to 611611 with the mesage being apn.
afrter a few minutes they will send a configuration message for browser and mms.
Install both. They should say installed when complete.
For others you will have to input your apn settings manually.
My phone showed H+ for the first few minutes, has been showing 4g ever since.
Just a few thoughts before i post, but are in no way tested or confirmed...
I'm thinking coming from cpk1 full firmware you could just flash the combination file in the AP slot.
Then after reboot to Download mode flash the cpk1 firmware without the CSC file and hve the same result,
but I havnt had a chance to test that yet as i need my phone running, and will soon have to go to work.
The main reason the N920AUCE2APB2.tar file was used was because i was playing around flashing different files it may or may not be needed. further testing is needed. but it was there during this process so i included it. Again I apologize if this could be simplified or if i left anything out. any comments are appreciated positive or negative. Thanks
Click to expand...
Click to collapse
If anyone could link me to the original poster of the combination file, it would be much apreciated. the user name i got was off android filehost site annd i would like to give them thanks if they are on the xda site. i searched their user name on xda and could not find. thanks again

Badbrane said:
https://forum.xda-developers.com/att-galaxy-note5/general/update-t3738023 N920A_N920AUCS4EQL1_ATT_USA_7.0.zip post #2
by huynhlam thank you
[ATT Note 5. on straight talk]
This process also works using this firmware. i updated from cpk1 using my process in post #2. i left out the (csc) and pit file in the N920A_N920AUCS4EQL1_ATT_USA_7.0.zip huynhlam posted in the link above. I am now on 7.0 with native hotspot and mobile hotspot icon in the notification drop down menu working . i can upload pictures but atm im not familiar with the best free file hosting sites so any suggestions would be greatly appreciated. i will keep trying different firmwares and update with results.
Click to expand...
Click to collapse
Hello Badbrane, I followed your instructions and I succeeded
Thanks a lot!
EDIT: After some testing I found out a bluetooth issue.
The first time I turn the device on, the bluetooth works fine. Then, after a reboot, I can't turn bluetooth on any more.
If I go through a Factory reset I will get the bluetooth working again, till next reboot

I need some help. I'm stuck in 2b (yellow information screen). when i hold [volume down] + [power button] it restarts instead of turning off. What should I do?

The combination file is no longer on Android file host. Any chance you have another link?
Im blind

https://1drv.ms/f/s!AhYiTPM1C3QkbQJswYeC0PtRMEY
not sure how long this link will be live but here's N920AUCS4CPK1.rar and COMBINATION_FA51_N920AUCU4APL1_CL6053901_QB11816686_REV00_user_mid_noship.rar. sorry it took so long to reply.

crazydoria said:
I need some help. I'm stuck in 2b (yellow information screen). when i hold [volume down] + [power button] it restarts instead of turning off. What should I do?
Click to expand...
Click to collapse
hold vol down and power till screen goes black immediatly change to 3 finger salute for dl or recovery. have to do it fast, that or wait for the battery to die and resume from there.

gmlai said:
Hello Badbrane, I followed your instructions and I succeeded
Thanks a lot!
EDIT: After some testing I found out a bluetooth issue.
The first time I turn the device on, the bluetooth works fine. Then, after a reboot, I can't turn bluetooth on any more.
If I go through a Factory reset I will get the bluetooth working again, till next reboot
Click to expand...
Click to collapse
I havnt really messed with the bluetooth much on my note 5 since i did this process. there are definetly a few bugs but my only concern was being able to use hotspot and tether. found out later that the system will try to auto update but it crashes every time so i no worring about hitting binary 5, as far as i know that is

Mi A2 Lite Bluetooth Audio Problems? Back To Oreo?

Hi There,
Just bought my GF a Mi A2 Lite a few weeks ago and she is loving it compared to her old iPhone 5s but one major issue atm is that her bluetooth headphones seem to be giving her issues!
The audio stutters a LOT even when right next to the phone. Tried resetting the Bluetooth connection but to no avail.
I had a quick scan through the forums and seen that people recommend going back to Oreo to solve the issues.
Is there any clear guides or links on how to do this? I know my way around tech so should have any issues following a guide.
Thanks in advance!

Yes, it's a very annoying bug.... I have it too, but didn't find a solution
That's the reason why I downgraded to Oreo!
If you want to downgrade,
1. you must unlock the bootloader, but this will erase all of your data. So, don't forget to make a backup of your internal storage. https://forum.xda-developers.com/mi-a2-lite/how-to/guide-how-to-unlock-bootloader-official-t3885578
2. Install MiFlash and ADB on your computer: https://www.xiaomiflash.com/download/ https://forum.xda-developers.com/showthread.php?t=2317790
3. Download an oreo stock rom and unzip it: https://forum.xda-developers.com/mi-a2-lite/how-to/fastboot-xiaomi-mi-a2-fastboot-images-t3824871
4. Boot your phone into bootloader
-> Connect your phone with your computer and enable ADB in developer settings
-> Shutdown your phone and hold Volume Down and Power-Button to boot your phone into fastboot/bootloader
5. Open the MiFlash-Tool on your computer and select the Oreo-Stock-Rom which you want to install.
6. At the bottom of the MiFlash window you must choose clean all, this will erase all of your data!
7. If your phone gets recognized from your computer and the programm, then you can hit the button flash on the top of the window
8. This procedure takes a while, so be patient.
9. If everything works, it will reboot your phone automatically.
10. Maybe you will have the bug of swapped SIMs. You must install TWRP: https://forum.xda-developers.com/mi-a2-lite/development/official-twrp-daisy-t3855396
and flash this file to fix it: https://forum.xda-developers.com/attachment.php?attachmentid=4704476&stc=1&d=1550012435
11. Perfect! You downgraded to Oreo!
I hope this little guide could help you, and sorry if it's a bit complicated

If it's any consolation, I had this issue on Oreo and Pie!
I'm now upgrading to a Pixel 3a, but keeping this phone for development. Might try porting Ubuntu Touch some time. ?

iforgotmylogin said:
If it's any consolation, I had this issue on Oreo and Pie!
I'm now upgrading to a Pixel 3a, but keeping this phone for development. Might try porting Ubuntu Touch some time. ?
Click to expand...
Click to collapse
Okay, that's weird ?
Maybe there was a problem with your Bluetooth headset?

00norman00 said:
Okay, that's weird ?
Maybe there was a problem with your Bluetooth headset?
Click to expand...
Click to collapse
If so, it was a problem with every one I tried!
I tried on a generic Bluetooth speaker, two different generations of Echo Dot, and on a current gen regular Echo.

It is channels problem. Bluetooth and WiFi are on 2.4GHz. Some frequencies are busy and it stutters. Turn off WiFi and Bluetooth. Turn Bluetooth on and connect your Bluetooth device. Wait 10 seconds and turn on WiFi. After this WiFi will avoid frequency where is Bluetooth device and use free frequencies.

LotR656 said:
It is channels problem. Bluetooth and WiFi are on 2.4GHz. Some frequencies are busy and it stutters. Turn off WiFi and Bluetooth. Turn Bluetooth on and connect your Bluetooth device. Wait 10 seconds and turn on WiFi. After this WiFi will avoid frequency where is Bluetooth device and use free frequencies.
Click to expand...
Click to collapse
Interesting... sounds like a pain in the ass, but I'll try this next time I get chance.
Thanks!

LotR656 said:
It is channels problem. Bluetooth and WiFi are on 2.4GHz. Some frequencies are busy and it stutters. Turn off WiFi and Bluetooth. Turn Bluetooth on and connect your Bluetooth device. Wait 10 seconds and turn on WiFi. After this WiFi will avoid frequency where is Bluetooth device and use free frequencies.
Click to expand...
Click to collapse
But it stutters also when wifi is offline. And on Android 8 I don't have this frequency-problem

00norman00 said:
But it stutters also when wifi is offline. And on Android 8 I don't have this frequency-problem
Click to expand...
Click to collapse
You can solve by adding the the missing codecs, all the routes are still there, xiaomi removed licensed codecs

Downgrade helped as of 30.05.2019
Mi A2 lite
Bought Galaxy Buds. Stuttered and eventually lost connection.
NOTE:What comes ahead is my personal experience (with some software errors that doesnt seem to have effect on our goal) downgrading my MI A2 lite to Oreo.
Downloaded Android Oreo 9.6.11 , ADB and Fastboot, Miflash(latest from site) from links in the beginning of the thread.
Very few proper video tutorials (Indian mostlyXD).
Enabled developer options on my phone (tapping 7 times on build number). In developer options enabled allow OEM unlock and turned on usb debug mode.
Turned off phone and launched it it fastboot mode (hold "volume down" and power button simultaneously). Connect phone to PC via usb.
Open folder on PC where you installed ADB and fastboot software. Launch cmd.exe or smth. In black window type "fastboot oem unlock" Enter. The phone reboots (takes a lot of time dont be alert) and wipes data from your phone. You will see a scary message/warning (disappear s after few sec) that asks you to lock bootloader back.
NOTE: somehow my device did not ask for any confirmations for enabling unlocked bootloader.
NOTE 2: I was trying to do this whole process by video and text guides. Some ppl type commands in cmd "fastboot flashing unlock" and then "fastboot flashing unlock_critical" BUT for some reason this commands did nothing. So all I did is oem unlock command.
After OEM unlock command rebooted phone skip all phone setups and open developer mode again (if it is locked) and in dev options check if "allow oem unlock" and usb debug mode is turned on. Turn off your phone and load it in fastboot mode (volume down+power).
On PC unpack Android Oreo files. It should look like a long name folder with some .bat files and folder (avoid unpacking in place with strange name paths).
Launch MiFlash tool. NOTE: it gave me a prompt for installing drivers and after i pressed it gave an error. It is fixed by creating inside MiFlash tool folder a new folder and naming it "log". Then launch the tool again and press install drivers.
Once you are in MiFlash program there is a ling space where you can insert a file path. You need to copy a file path that leads to your unpacked Android Oreo files (the path should lead inside where the .bat files located). Paste this copied path into MiFlash path bar and press refresh button. If there is no error you can proceed by pressing in the bottom right corner a "clear all" option and in the top right "flash" button. This will install Android Oreo on your mi a2 lite.
After the process is done i had an error in MiFlash program BUT the phone reboots on its own with downgraded Android version. Turn the phone off, load it in fastboot mode, connect via usb and run in ADB folder CMD.exe and run "fastboot oem lock" command. The phone reboots, takes a while.
!!!
After it reboots immediately skip all phone setup menus especially wifi and account options and go straight in settings to unlock developer mode. In developer options TURN OFF AUTOMATIC SYSTEM UPDATES! After it you can finish phone setup process ,accounts, networks and everything else.
An Android message "update available" can pop up. To get rid of it for good simply swipe it slowly A BIT (not all the way) till you see a cog sign (options icon) and there turn of this notification.
Now you can go smoke a cigar. Android 8.1.0 Oreo installed AND it wont update automaticlly to PIE. You can use your bluetooth devices properly (or whatever problems you had).
Have a nice day. Gonna probably go buy Samsung A30. This **** is unacceptable. Pie update rolled out long time ago (Android Q is releasing in 3 months from now) and this stuff is still not fixed. Wtf

Solution
I did a simple step to fix pair
Reboot into safe mode, pair the select device, after pair reboot out the safe mode and you see the device paired.
Cheers
---------- Post added at 10:15 PM ---------- Previous post was at 10:14 PM ----------
I did a simple step to fix pair
Reboot into safe mode, pair the select device, after pair reboot out the safe mode and you see the device paired.
Cheers

SM-R825F CSC change tutorial

New Tutorial for Tizen 5 on SM-R825F
The following guide is just a tutorial on how I changed the CSC, if you decide to follow it you take every risk
Step#0: Charge your watch to >90% charged
Step#1: Download 'NETODIN' https://androidfilehost.com/?fid=11410963190603905901
Step#2 Download SDBStarterKidv1 from https://androidfilehost.com/?fid=6006931924117921328
Step#3: For model R825F download Combination Firmware COMBINATION-FT55_R825USQU1AUA4_clean.zip https://forum.xda-developers.com/attachments/combination-ft55_r825usqu1aua4_clean-zip.5303647/ (Combination For R825F or 825U is the some) Thank's to @adfree
download stock firmware for R825F R825FXXU1CUA5_Tizen_4File_CSC (OXA).zip https://forum.xda-developers.com/attachments/r825fxxu1cua5_tizen_4file_csc-oxa-zip.5273729/ Thank's to @adfree
Step#4: Keep on holding the Home button on the watch till you see Rebooting popup appears
Step#5: Immediately start pressing the Home button until the recovery option appears
Step#6: now press Home button again to drop down to "download mode (wireless mode)
Step#7: now hold the Home button again for some time till the black screen appears
Step#8: at the download mode screen now again press home button again until connection type changes to AP
Step#9: check your wireless network in your computer, you will see a new open network will appear showing model number of your watch, connect your system to that network
Step#10: Now open NETODIN and you will be able to see that NETODIN shows connected
Step#10a If you have a firmware diiferento from R825FXXU1CUA5_Tizen_4File_CSC (OXA) upgrade or downgrade at R825FXXU1CUA5_Tizen_4File_CSC (OXA) then go again at Step#4
Step#11: In NETODIN select options and turn off (untick) AUTOREBOOT.
Step#12: Click on AP in NETODIN and select the file from the combination firmware, when NETODIN has finished checking the file, press the start button.
Step#13: once you see pass status in NETODIN press the reset button ( in my case gived fail, but not a problem, reload net odin if doesn't recognise watch launch it again and
Step#13a: In NETODIN select options again and again turn off (untick) AUTOREBOOT
Step#13b: Select CSC and select the CSC file located in the STOCK ROM file (Step#3), press start button
Step#14: once you see pass status in the NETODIN, hold the Home button on your watch until you see rebooting splash and repeat the STEP#6 to access the recovery options menu
Step#15: go down so "recovery" is selected and then hold down the HOME button until black screen appears
Step#16: your watch shall start normally and after that go to settings in your watch turn on wifi and connect to your wifi network, just search for IP their and note it down
Step#17: go to about and software "third item written in blue color of two characters most likely" locate software and continue tapping on that until you see some popup appears
Step#18: restart your watch (hold home key until it powers off, then hold home key again till it restarts)
Step#19: open SDBStarterKidv1.zip and extract content. Open the folder data/tools and run ansicon.exe. This will open a CLI = Command Line Interface
Step#20: Type: sdb connect ***.***.*.***
ps * indicate your watch ip which you have written in step #16
you shall see connected to
Step#21: Type: sdb root on
Step#22: Type: sdb pull /csa/csc/csc-active-customer.inf
Step#23: Type: sdb pull /csa/imei/prodcode.dat
Step#24: now open and edit, in sdb_2.2.60_windows-64\data\tools folder, with notepad these files, csc-active-customer.inf and prodcode.dat, and change CSC old with your new CSC
and save
Step#25: type: sdb push csc-active-customer.inf /csa/csc/
Step#26: Type: : sdb push prodcode.dat /csa/imei/
Step#27: rebbot you watch in odin wifi mode
Step#28: launch net odin connect your watch ad charge your stock firmware (Step#3) and press start
Step#29: after the reboot enjoy your watch with working samsung pay
Step#30: in my case after reboot asked me to update new firmware via OTA
as a visual guide I recommend the video of this link:
https://forum.xda-developers.com/s...forum.xda-developers.com/att...5&d=1515359315
Step#2 Download SDBStarterKidv1 from https://forum.xda-developers.com/att...2&d=1511255266
Step#3: For model R825F download Combination Firmware https://androidfilehost.com/?fid=4349826312261729030 (Combination For R825F or 825U is the some) download stock firmware for R825F
https://mega.nz/#!9scnEaTJ!RRd9ZHG8hPTe2ZNGgzcunbx_Mn_SHCfoBkxpsMIiTa8
Step#4: Keep on holding the Home button on the watch till you see Rebooting popup appears
Step#5: Immediately start pressing the Home button until the recovery option appears
Step#6: now press Home button again to drop down to "download mode (wireless mode)
Step#7: now hold the Home button again for some time till the black screen appears
Step#8: at the download mode screen now again press home button again until connection type changes to AP
Step#9: check your wireless network in your computer, you will see a new open network will appear showing model number of your watch, connect your system to that network
Step#10: Now open NETODIN and you will be able to see that NETODIN shows connected
Step#11: In NETODIN select options and turn off (untick) AUTOREBOOT.
Step#12: Click on AP in NETODIN and select the file from the combination firmware, when NETODIN has finished checking the file, press the start button.
Step#13: once you see pass status in NETODIN press the reset button ( in my case gived fail, but not a problem, reload net odin if doesn't recognise watch launch it again and disconnect/reconnect wifi named SM-R825F)
Step#13a: In NETODIN select options again and again turn off (untick) AUTOREBOOT
Step#13b: Select CSC and select the CSC file located in the STOCK ROM file (Step#3), press start button
Step#14: once you see pass status in the NETODIN, hold the Home button on your watch until you see rebooting splash and repeat the STEP#6 to access the recovery options menu
Step#15: go down so "recovery" is selected and then hold down the HOME button until black screen appears
Step#16: your watch shall start normally and after that go to settings in your watch turn on wifi and connect to your wifi network, just search for IP their and note it down
Step#17: go to about and software "third item written in blue color of two characters most likely" locate software and continue tapping on that until you see some popup appears
Step#18: restart your watch (hold home key until it powers off, then hold home key again till it restarts)
Step#19: open SDBStarterKidv1.zip and extract content. Open the folder data/tools and run ansicon.exe. This will open a CLI = Command Line Interface
Step#20: Type: sdb connect ***.***.*.***
ps * indicate your watch ip which you have written in step #16
you shall see connected to
Step#21: Type: sdb root on
Step#22: Type: sdb pull /csa/csc/csc-active-customer.inf
Step#23: Type: sdb pull /csa/imei/prodcode.dat
Step#24: now open and edit, in sdb_2.2.60_windows-64\data\tools folder, with notepad these files, csc-active-customer.inf and prodcode.dat, and change CSC old with your new CSC and save
Step#25: type: sdb push csc-active-customer.inf /csa/csc/
Step#26: Type: : sdb push prodcode.dat /csa/imei/
Step#27: rebbot you watch in odin wifi mode
Step#28: launch net odin connect your watch and charge your stock firmware BL, AP, CP and CSC and press start
Step#29: after the reboot enjoy your watch with working samsung pay
Step#30: in my case after reboot asked me to update new firmware via OTA
as a visual guide I recommend the video of this link:
https://forum.xda-developers.com/showpost.php?p=81777057&postcount=223
thanks to @adfree for the fundamental support and patience and to @tb for inspiration and for tutorial on which this is based
thanks to @adfree for the fundamental support and patience and to @tb for inspiration and for tutorial on which this is based

What was your reasoning for doing this? To get updates faster? To be able to use LTE in a different area? Both?

equlizer said:
What was your reasoning for doing this? To get updates faster? To be able to use LTE in a different area? Both?
Click to expand...
Click to collapse
For use samsung pay and LTE, because before they didn't work.
Best regards

Mithos11 said:
For use samsung pay and LTE, because before they didn't work.
Best regards
Click to expand...
Click to collapse
So all you did was flash the canadian firmware on your watch and LTE worked in canada? Just wanting to make sure 100% that this works cause i dont want a bricked watch You flashed over wifi netodin then clicked mobile networks and found the watch?

equlizer said:
So all you did was flash the canadian firmware on your watch and LTE worked in canada? Just wanting to make sure 100% that this works cause i dont want a bricked watch You flashed over wifi netodin then clicked mobile networks and found the watch?
Click to expand...
Click to collapse
My watch is 825F, before was DBT now became ITV with OXA firmware.
I flashed combination firmware for 825U like tutorial, made CSC change and then flashed stock firmware OXA.
When I flashed combination fw net odin gived me an error, but I continued to flash CSC, in my case worked at 100%.
Only now I read that you have 815U, therefore I don't know if this tutorial works for your model!
Bedt regards

I see step #28 launch net odin connect your watch ad charge your stock firmware (Step#3) and press start. Do you mean load BL, AP and CP then flash? or add CSC too? Sorry that step is confusing to me.

equlizer said:
I see step #28 launch net odin connect your watch ad charge your stock firmware (Step#3) and press start. Do you mean load BL, AP and CP then flash? or add CSC too? Sorry that step is confusing to me.
Click to expand...
Click to collapse
BL, AP, CP and CSC

Just out of curiosity, if something goes wrong, what would i do to go back to the way the watch was before? Just flash the original firmware and reboot? Thx

equlizer said:
Just out of curiosity, if something goes wrong, what would i do to go back to the way the watch was before? Just flash the original firmware and reboot? Thx
Click to expand...
Click to collapse
If something goes wrong you could brick your watch or could be lock wifi mode in odin like this link
https://forum.xda-developers.com/sm...axy-watch-active-2-44mm-sm-r820-odin-t4009587

Well thats what happened just right now Luckily i have the usb mod cable. So i guess ill just load up the original firmware and flash it back.
Mind you, adfree said i could probable get away with just flashing the stock firmware for my watch since its a regular galaxy 42mm watch. Let's just say he was wrong. So ill try your method now and see how it goes. At least i know i can get back to stock and try again with the Gear S charger.
Mithos11 said:
If something goes wrong you could brick your watch or could be lock wifi mode in odin like this link
https://forum.xda-developers.com/sm...axy-watch-active-2-44mm-sm-r820-odin-t4009587
Click to expand...
Click to collapse

equlizer said:
Well thats what happened just right now Luckily i have the usb mod cable. So i guess ill just load up the original firmware and flash it back.
Mind you, adfree said i could probable get away with just flashing the stock firmware for my watch since its a regular galaxy 42mm watch. Let's just say he was wrong. So ill try your method now and see how it goes. At least i know i can get back to stock and try again with the Gear S charger.
Click to expand...
Click to collapse
I suggest to you to see this post where someone talk about canadian firmware
https://forum.xda-developers.com/smartwatch/galaxy-watch/changing-cs-gwa2-sm-r825f-t4017839/page4

Tried it your way too and a garbled screen came up but then pressed power to get to recovery menu (after flashing .csc) then held power but now im stuck in odin mode again (till i usb it again) then start from scratch It doesnt seem to want to go into recovery mode after flashing combined and csc.
---------- Post added at 07:30 PM ---------- Previous post was at 06:43 PM ----------

Well, I've tried every method known so far and at the end I get the odin screen which i need to recover from using the Gear S charger. This method or the russian youtube method will not work for the regular galaxy watches (42 and 44mm) I've been trying for 10 hours with no luck. Anyone else want to give it a go? I've even tried leaving the auto reboot in odin checked and i still only get to the "go to the recovery menu then hold power" till it reboots to recovery on the watch. That's where my luck ends. I get the odin screen which needs the Gear S charget to get back to 815U. Make sure you use the U combination firmware (if youre coming from the AT&T watch)

equlizer said:
Well, I've tried every method known so far and at the end I get the odin screen which i need to recover from using the Gear S charger. This method or the russian youtube method will not work for the regular galaxy watches (42 and 44mm) I've been trying for 10 hours with no luck. Anyone else want to give it a go? I've even tried leaving the auto reboot in odin checked and i still only get to the "go to the recovery menu then hold power" till it reboots to recovery on the watch. That's where my luck ends. I get the odin screen which needs the Gear S charget to get back to 815U. Make sure you use the U combination firmware (if youre coming from the AT&T watch)
Click to expand...
Click to collapse
I used for my SM-R825F this file COMBINATION FT40 R825FSQU1ASL2 from easy firmware that they give for SM-R825F in fact the download is COMBINATION FT40 R825FSQU1ASL2 but really, when download is finished the name of file is COMBINATION FT40 R825USQU1ASL2 and all worked fine for me!
Best regards

K i just got a membership there too and downloaded the latest combination and regular firmware for the galaxy watch 42mm SM-R815U. Let's see if it works now!
Mithos11 said:
I used for my SM-R825F this file COMBINATION FT40 R825FSQU1ASL2 from easy firmware that they give for SM-R825F in fact the download is COMBINATION FT40 R825FSQU1ASL2 but really, when download is finished the name of file is COMBINATION FT40 R825USQU1ASL2 and all worked fine for me!
Best regards
Click to expand...
Click to collapse

equlizer said:
K i just got a membership there too and downloaded the latest combination and regular firmware for the galaxy watch 42mm SM-R815U. Let's see if it works now!
Click to expand...
Click to collapse
Suggest to you to flash only your BL with jtag and then if works try to flash all firmware with net odin

Do you mean the last step where i flash all 4, flash BL with jtag then connect wireless with the reset?
Mithos11 said:
Suggest to you to flash only your BL with jtag and then if works try to flash all firmware with net odin
Click to expand...
Click to collapse

equlizer said:
Do you mean the last step where i flash all 4, flash BL with jtag then connect wireless with the reset?
Click to expand...
Click to collapse
In a video of youtube, at first flash BL with jtag, then flash alla firmware (BL AP C0 CSC) with netodin in wifi mode.

If i flash BL with jtag, i have to reboot into wireless download mode and the watch hangs at odin causing me to restart the whole process. BTW, while flashing any of the files here, it says "OK" and nothing was skipped over on the write process.
So just to 100% confirm, when flashing the CSC file, are you using the one from the oringinal firmware or the new one you want to install? Also do you have matching firmware files and combination files? (same letters and numbers in the file name)?
Mithos11 said:
In a video of youtube, at first flash BL with jtag, then flash alla firmware (BL AP C0 CSC) with netodin in wifi mode.
Click to expand...
Click to collapse

equlizer said:
If i flash BL with jtag, i have to reboot into wireless download mode and the watch hangs at odin causing me to restart the whole process. BTW, while flashing any of the files here, it says "OK" and nothing was skipped over on the write process.
So just to 100% confirm, when flashing the CSC file, are you using the one from the oringinal firmware or the new one you want to install? Also do you have matching firmware files and combination files? (same letters and numbers in the file name)?
Click to expand...
Click to collapse
I have these:
https://easy-firmware.com/index.php?a=downloads&b=folder&id=35892
https://easy-firmware.com/index.php?a=downloads&b=folder&id=35614

Fall Detection /Spo2/R825F - ECG 4.0.0.07

Hi users ...this link can be used if someone would be interested to post and share about new feature that has come.in 5.5 users like spo2, fall detection and ECG for 825f ...LTE users...

I'm very skeptical this will be coming to the R825f, Samsung f'ed us over

guys u must be on tizen 4.0.0.08
Sent from my SM-G988B using Tapatalk

carlitobahsoun said:
guys u must be on tizen 4.0.0.08
Click to expand...
Click to collapse
Not sure if we get tizen 5.5 we may have these features ...pls do mentioned guys LTE users if you receive 4.0.0.8 ....and u have successfully working ECG working

amitdon said:
Not sure if we get tizen 5.5 we may have these features ...pls do mentioned guys LTE users if you receive 4.0.0.8 ....and u have successfully working ECG working
Click to expand...
Click to collapse
4.0.0.08 only in usa , and there are too much video showing how to make it work .
Sent from my SM-G988B using Tapatalk

carlitobahsoun said:
4.0.0.08 only in usa , and there are too much video showing how to make it work .
Click to expand...
Click to collapse
For lte user ....do you have any idea how to change R825F to R825U...

amitdon said:
For lte user ....do you have any idea how to change R825F to R825U...
Click to expand...
Click to collapse
for me its complicated lol , but read well and at ur own risk , lol , by the way i have galaxy watch not the active .
https://r.tapatalk.com/shareLink/to...5&share_fid=3793&share_type=t&link_source=app
Sent from my SM-G988B using Tapatalk

@adfree ... will we have a chance to have to fall detection and SPO2 coming in Galaxy watch active 2

Sams.ng is still working on Tizen 5.5 Far ehm Porting to GWA2....
no idea when...
Maybe November 2020...
Blood Oxygen is part of Samsung Health App... require API 5.5...
So tiny bit harder to play with...
Fall Detection...
No idea yet... I saw only ATF3 and ATF6... not BTG6 GW3 Firmware for study...
Seems "part of Firmware"... not really standalone TPK or WGT...
IMHO low chance before official upgrade to Tizen 5.5...
Best Regards
Edit 1.
For our experts...
https://forum.xda-developers.com/showpost.php?p=83284667&postcount=1642

adfree said:
Sams.ng is still working on Tizen 5.5 Far ehm Porting to GWA2....
no idea when...
Maybe November 2020...
Blood Oxygen is part of Samsung Health App... require API 5.5...
So tiny bit harder to play with...
Fall Detection...
No idea yet... I saw only ATF3 and ATF6... not BTG6 GW3 Firmware for study...
Seems "part of Firmware"... not really standalone TPK or WGT...
IMHO low chance before official upgrade to Tizen 5.5...
Best Regards
Edit 1.
For our experts...
https://forum.xda-developers.com/showpost.php?p=83284667&postcount=1642
Click to expand...
Click to collapse
thanks buddy ...let's wait .. dont know when we can use ECG for poor user .. 4.0.0.7......
I have tried call OLD tpk for ECG .. nothing works

Hi Guys I just converted my GWA2 (R825F) from XSA Australia To OKA South Korea ...
see the attached image ...

amitdon said:
Hi Guys I just converted my GWA2 (R825F) from XSA Australia To OKA South Korea ...
see the attached image ...
Click to expand...
Click to collapse
I'd appreciate it if you could tell me how you did it.
Greetings

Taken 1st ECG finally on R825f LTE model

ECG Option for R285F with update 4.0.0.8
Finally Its took me lot of hardwork and research ..but finally ECG worked on my watch ....please go through the step step process mentioned below ..and please be sure of taking the risk u if wanna have fun to record ECG ... on LTE watch ...
Pros
LTE worked for Me
Samsung health update for me
The most latest update on LTE R825F watches
Latest firmware LTE .4.0.0.8
Offical update _ no issue of installing the TPK through different sources.
Cons
No Samung pay - which i love the most on watch, anyways will use till I get the official update of 4.0.0.8 on my region.
The process is very similar the way you change the CSC in other watches (R820) but the only difference is the file you use in LTE has to be specific to region .. i was XSA (Australian region) so I updated to LUO (LG plus Region- South Korea).
Check the the link below the following version available on the Fota update to get the latest 4.0.0.8 on R825F.
http://fota-cloud-dn.ospserver.net/firmware/LUO/SM-R825F/version.xml
(R825FXXU1ATF4/R825FOKA1ATF4/R825FXXU1ATF4)
R825FXXU1ASJ4_Tizen_4File_Korea (OKA)
https://mega.nz/#!plNViSab!y2uHnTtNH...QsWnWAisdwKKP0
Step#0: Charge your watch to >90% charged
Step#1: Download 'NETODIN' https://forum.xda-developers.com/att...5&d=1515359315
Step#2 Download SDBStarterKidv1 from https://forum.xda-developers.com/att...2&d=1511255266
Step#3: For model R825F download Combination Firmware https://androidfilehost.com/?fid=4349826312261729030 (Combination For R825F or 825U is the some) download stock firmware for R825F
Step#4: Keep on holding the Home button on the watch till you see Rebooting popup appears
Step#5: Immediately start pressing the Home button until the recovery option appears
Step#6: now press Home button again to drop down to "download mode (wireless mode)
Step#7: now hold the Home button again for some time till the black screen appears
Step#8: at the download mode screen now again press home button again until connection type changes to AP
Step#9: check your wireless network in your computer, you will see a new open network will appear showing model number of your watch, connect your system to that network
Step#10: Now open NETODIN and you will be able to see that NETODIN shows connected
Step#11: In NETODIN select options and turn off (untick) AUTOREBOOT.
Step#12: Click on AP in NETODIN and select the file from the combination firmware, when NETODIN has finished checking the file, press the start button.
Step#13: once you see pass status in NETODIN press the reset button ( in my case gived fail, but not a problem, reload net odin if doesn't recognise watch launch it again and disconnect/reconnect wifi named SM-R825F)
Step#13a: In NETODIN select options again and again turn off (untick) AUTOREBOOT
Step#13b: Select CSC and select the CSC file located in the STOCK ROM file (Step#3), press start button
Step#14: once you see pass status in the NETODIN, hold the Home button on your watch until you see rebooting splash and repeat the STEP#6 to access the recovery options menu
Step#15: go down so "recovery" is selected and then hold down the HOME button until black screen appears
Step#16: your watch shall start normally and after that go to settings in your watch turn on wifi and connect to your wifi network, just search for IP their and note it down
Step#17: go to about and software "third item written in blue color of two characters most likely" locate software and continue tapping on that until you see some popup appears
Step#18: restart your watch (hold home key until it powers off, then hold home key again till it restarts)
Step#19: open SDBStarterKidv1.zip and extract content. Open the folder data/tools and run ansicon.exe. This will open a CLI = Command Line Interface
Step#20: Type: sdb connect ***.***.*.***
ps * indicate your watch ip which you have written in step #16
you shall see connected to
Step#21: Type: sdb root on
Step#22: Type: sdb pull /csa/csc/csc-active-customer.inf
IMP the change CSC to - LUO
Step#23: Type: sdb pull /csa/imei/prodcode.dat
IMP the change last three digit CSC to - LUO
Step#24: now open and edit, in sdb_2.2.60_windows-64\data\tools folder, with notepad these files, csc-active-customer.inf and prodcode.dat, and change CSC old with your new CSC and save
Step#25: type: sdb push csc-active-customer.inf /csa/csc/
Step#26: Type: : sdb push prodcode.dat /csa/imei/
Step#27: rebbot you watch in odin wifi mode
Step#28: launch net odin connect your watch and charge your stock firmware BL, AP, and CSC and press start
Step#29: let the watch restart and then again go to rebooting mode and select wifi download and install CP file.
Step#30: The watch will restart and let the step up finish and the go to Galaxy werable app and select update... manually ... you will get the latest firmware 4.0.0.8 after installing the please update SHM app on watch by using the option of VPN and then update through galaxy app store.
for mobile app use this app only https://drive.google.com/file/d/1UGN...jdhd06YBH/view as the app from the galaxy stores dont work.
Enjoy and have fun thank me if you like it ....i did this only for R825F user as they also can have fun of using ECG.
Special thanks to @Nmc_alves® @adfree.

amitdon said:
Hi Guys I just converted my GWA2 (R825F) from XSA Australia To OKA South Korea ...
see the attached image ...
Click to expand...
Click to collapse
amitdon said:
Finally Its took me lot of hardwork and research ..but finally ECG worked on my watch ....please go through the step step process mentioned below ..and please be sure of taking the risk u if wanna have fun to record ECG ... on LTE watch ...
Pros
LTE worked for Me
Samsung health update for me
The most latest update on LTE R825F watches
Latest firmware LTE .4.0.0.8
Offical update _ no issue of installing the TPK through different sources.
Cons
No Samung pay - which i love the most on watch, anyways will use till I get the official update of 4.0.0.8 on my region.
The process is very similar the way you change the CSC in other watches (R820) but the only difference is the file you use in LTE has to be specific to region .. i was XSA (Australian region) so I updated to LUO (LG plus Region- South Korea).
Check the the link below the following version available on the Fota update to get the latest 4.0.0.8 on R825F.
http://fota-cloud-dn.ospserver.net/firmware/LUO/SM-R825F/version.xml
(R825FXXU1ATF4/R825FOKA1ATF4/R825FXXU1ATF4)
R825FXXU1ASJ4_Tizen_4File_Korea (OKA)
https://mega.nz/#!plNViSab!y2uHnTtNH...QsWnWAisdwKKP0
Step#0: Charge your watch to >90% charged
Step#1: Download 'NETODIN' https://forum.xda-developers.com/att...5&d=1515359315
Step#2 Download SDBStarterKidv1 from https://forum.xda-developers.com/att...2&d=1511255266
Step#3: For model R825F download Combination Firmware https://androidfilehost.com/?fid=4349826312261729030 (Combination For R825F or 825U is the some) download stock firmware for R825F
Step#4: Keep on holding the Home button on the watch till you see Rebooting popup appears
Step#5: Immediately start pressing the Home button until the recovery option appears
Step#6: now press Home button again to drop down to "download mode (wireless mode)
Step#7: now hold the Home button again for some time till the black screen appears
Step#8: at the download mode screen now again press home button again until connection type changes to AP
Step#9: check your wireless network in your computer, you will see a new open network will appear showing model number of your watch, connect your system to that network
Step#10: Now open NETODIN and you will be able to see that NETODIN shows connected
Step#11: In NETODIN select options and turn off (untick) AUTOREBOOT.
Step#12: Click on AP in NETODIN and select the file from the combination firmware, when NETODIN has finished checking the file, press the start button.
Step#13: once you see pass status in NETODIN press the reset button ( in my case gived fail, but not a problem, reload net odin if doesn't recognise watch launch it again and disconnect/reconnect wifi named SM-R825F)
Step#13a: In NETODIN select options again and again turn off (untick) AUTOREBOOT
Step#13b: Select CSC and select the CSC file located in the STOCK ROM file (Step#3), press start button
Step#14: once you see pass status in the NETODIN, hold the Home button on your watch until you see rebooting splash and repeat the STEP#6 to access the recovery options menu
Step#15: go down so "recovery" is selected and then hold down the HOME button until black screen appears
Step#16: your watch shall start normally and after that go to settings in your watch turn on wifi and connect to your wifi network, just search for IP their and note it down
Step#17: go to about and software "third item written in blue color of two characters most likely" locate software and continue tapping on that until you see some popup appears
Step#18: restart your watch (hold home key until it powers off, then hold home key again till it restarts)
Step#19: open SDBStarterKidv1.zip and extract content. Open the folder data/tools and run ansicon.exe. This will open a CLI = Command Line Interface
Step#20: Type: sdb connect ***.***.*.***
ps * indicate your watch ip which you have written in step #16
you shall see connected to
Step#21: Type: sdb root on
Step#22: Type: sdb pull /csa/csc/csc-active-customer.inf
IMP the change CSC to - LUO
Step#23: Type: sdb pull /csa/imei/prodcode.dat
IMP the change last three digit CSC to - LUO
Step#24: now open and edit, in sdb_2.2.60_windows-64\data\tools folder, with notepad these files, csc-active-customer.inf and prodcode.dat, and change CSC old with your new CSC and save
Step#25: type: sdb push csc-active-customer.inf /csa/csc/
Step#26: Type: : sdb push prodcode.dat /csa/imei/
Step#27: rebbot you watch in odin wifi mode
Step#28: launch net odin connect your watch and charge your stock firmware BL, AP, and CSC and press start
Step#29: let the watch restart and then again go to rebooting mode and select wifi download and install CP file.
Step#30: The watch will restart and let the step up finish and the go to Galaxy werable app and select update... manually ... you will get the latest firmware 4.0.0.8 after installing the please update SHM app on watch by using the option of VPN and then update through galaxy app store.
for mobile app use this app only https://drive.google.com/file/d/1UGN...jdhd06YBH/view as the app from the galaxy stores dont work.
Enjoy and have fun thank me if you like it ....i did this only for R825F user as they also can have fun of using ECG.
Special thanks to @Nmc_alves® @adfree.
Click to expand...
Click to collapse
Thank you very much for your work and for sharing.
The link to the mobile application does not work.
A greeting.

pepocho said:
Thank you very much for your work and for sharing.
The link to the mobile application does not work.
A greeting.
Click to expand...
Click to collapse
https://drive.google.com/file/d/1UGN5TbzHyZ4386iGK5fdd1Ajdhd06YBH/view
do let me know once get the job done ...share ur 1st ECG picture ....

Hi guys,
I am keen to try out but worried if I am stuck or have problem how to go back to original firmware?
I have R825FXXU1ATD7 Australia XSA version.
Do any one have stock firmware for this version.

Deppp said:
Hi guys,
I am keen to try out but worried if I am stuck or have problem how to go back to original firmware?
I have R825FXXU1ATD7 Australia XSA version.
Do any one have stock firmware for this version.
Click to expand...
Click to collapse
yes I have

amitdon said:
yes I have
Click to expand...
Click to collapse
Can you please share the firmware?

amitdon said:
Finally Its took me lot of hardwork and research ..but finally ECG worked on my watch ....please go through the step step process mentioned below ..and please be sure of taking the risk u if wanna have fun to record ECG ... on LTE watch ...
Pros
LTE worked for Me
Samsung health update for me
The most latest update on LTE R825F watches
Latest firmware LTE .4.0.0.8
Offical update _ no issue of installing the TPK through different sources.
Cons
No Samung pay - which i love the most on watch, anyways will use till I get the official update of 4.0.0.8 on my region.
The process is very similar the way you change the CSC in other watches (R820) but the only difference is the file you use in LTE has to be specific to region .. i was XSA (Australian region) so I updated to LUO (LG plus Region- South Korea).
Check the the link below the following version available on the Fota update to get the latest 4.0.0.8 on R825F.
http://fota-cloud-dn.ospserver.net/firmware/LUO/SM-R825F/version.xml
(R825FXXU1ATF4/R825FOKA1ATF4/R825FXXU1ATF4)
R825FXXU1ASJ4_Tizen_4File_Korea (OKA)
https://mega.nz/#!plNViSab!y2uHnTtNH...QsWnWAisdwKKP0
Step#0: Charge your watch to >90% charged
Step#1: Download 'NETODIN' https://forum.xda-developers.com/att...5&d=1515359315
Step#2 Download SDBStarterKidv1 from https://forum.xda-developers.com/att...2&d=1511255266
Step#3: For model R825F download Combination Firmware https://androidfilehost.com/?fid=4349826312261729030 (Combination For R825F or 825U is the some) download stock firmware for R825F
Step#4: Keep on holding the Home button on the watch till you see Rebooting popup appears
Step#5: Immediately start pressing the Home button until the recovery option appears
Step#6: now press Home button again to drop down to "download mode (wireless mode)
Step#7: now hold the Home button again for some time till the black screen appears
Step#8: at the download mode screen now again press home button again until connection type changes to AP
Step#9: check your wireless network in your computer, you will see a new open network will appear showing model number of your watch, connect your system to that network
Step#10: Now open NETODIN and you will be able to see that NETODIN shows connected
Step#11: In NETODIN select options and turn off (untick) AUTOREBOOT.
Step#12: Click on AP in NETODIN and select the file from the combination firmware, when NETODIN has finished checking the file, press the start button.
Step#13: once you see pass status in NETODIN press the reset button ( in my case gived fail, but not a problem, reload net odin if doesn't recognise watch launch it again and disconnect/reconnect wifi named SM-R825F)
Step#13a: In NETODIN select options again and again turn off (untick) AUTOREBOOT
Step#13b: Select CSC and select the CSC file located in the STOCK ROM file (Step#3), press start button
Step#14: once you see pass status in the NETODIN, hold the Home button on your watch until you see rebooting splash and repeat the STEP#6 to access the recovery options menu
Step#15: go down so "recovery" is selected and then hold down the HOME button until black screen appears
Step#16: your watch shall start normally and after that go to settings in your watch turn on wifi and connect to your wifi network, just search for IP their and note it down
Step#17: go to about and software "third item written in blue color of two characters most likely" locate software and continue tapping on that until you see some popup appears
Step#18: restart your watch (hold home key until it powers off, then hold home key again till it restarts)
Step#19: open SDBStarterKidv1.zip and extract content. Open the folder data/tools and run ansicon.exe. This will open a CLI = Command Line Interface
Step#20: Type: sdb connect ***.***.*.***
ps * indicate your watch ip which you have written in step #16
you shall see connected to
Step#21: Type: sdb root on
Step#22: Type: sdb pull /csa/csc/csc-active-customer.inf
IMP the change CSC to - LUO
Step#23: Type: sdb pull /csa/imei/prodcode.dat
IMP the change last three digit CSC to - LUO
Step#24: now open and edit, in sdb_2.2.60_windows-64\data\tools folder, with notepad these files, csc-active-customer.inf and prodcode.dat, and change CSC old with your new CSC and save
Step#25: type: sdb push csc-active-customer.inf /csa/csc/
Step#26: Type: : sdb push prodcode.dat /csa/imei/
Step#27: rebbot you watch in odin wifi mode
Step#28: launch net odin connect your watch and charge your stock firmware BL, AP, and CSC and press start
Step#29: let the watch restart and then again go to rebooting mode and select wifi download and install CP file.
Step#30: The watch will restart and let the step up finish and the go to Galaxy werable app and select update... manually ... you will get the latest firmware 4.0.0.8 after installing the please update SHM app on watch by using the option of VPN and then update through galaxy app store.
for mobile app use this app only https://drive.google.com/file/d/1UGN...jdhd06YBH/view as the app from the galaxy stores dont work.
Enjoy and have fun thank me if you like it ....i did this only for R825F user as they also can have fun of using ECG.
Special thanks to @Nmc_alves® @adfree.
Click to expand...
Click to collapse
Download link on Mega is requesting a decryption key. How do I get it.

[SM-R800][4.0.0.7]CSC Change Process

So I recently got a Samsung Galaxy Watch (SM-R800), but to my dismay, Samsung Pay was not available in it by default.
By searching on xda, I found out that running some simple sdb commands would do it, but unfortunately, it worked only in 4.0.0.4 version and mine had 4.0.0.7 out of the box.
Then I found out that the watch can be easily downgraded 4.0.0.4 and then perform the sdb shell commands, setup Samsung pay and upgrade to latest version again. Although finding the process was easy, finding the required firmware files took a lot of time, going through the threads and all. But I found them eventually.
To make it easier to come back to and to help wandering souls if any, I decided to create this thread.
Although I have written for SM-R800 specifically, it may work on other watches too as the firmware link has firmware for other watches too(R810,R805F,R815F,R805U,R815U).
Download links:
NetOdin3_1.0.zip
SDBstarterKidv1.zip
SDBstarterKidv1.zip
Firmware's can be found here : https://4pda.ru/forum/index.php?showtopic=978373&st=80#entry92121314
Following is the process I followed:
Charge watch, at least 90% . This is required as your watch will reboot many times during the process.
Set screen timeout to 5 minutes
Backup your data if any. This process resets watch multiple times.
Keep the WiFi password simple/open, you have to enter it multiple times in the watch during process.
Download
a. Old firmware
b. New Firmware
c. NetOdin3_1.0.zip
d. SDBstarterKidv1.zip
Reboot watch to Download (wireless). To do this:
a. Press and hold power button
b. When you see rebooting on screen, press power button a few times
c. You will get a menu like below
d. By pressing power button, highlight ‘Download (wireless)’ mode and then press power button long to select it
This puts the watch in WPS mode, but we need AP mode in this case. To switch to AP mode, press power button twice, you will see image as below:
Now on laptop/PC, connect to an open WiFi which has name of the device. In My case it was SM-R800.
After connecting, watch will continuously show “Connection timed out error 110”. This is fine.
Now open NetOdin3.exe as administrator. After sometime, the NetOdin window will show IP address of the watch and <ID:0/001> 192.168.49.1 in the Log window. If it is not connecting, try disabling firewall (or Windows defender).
Now once the watch is connected, select the appropriate files in three boxes. For me it was:
a. BL : BL_R800XXU1CSI1_usr.tar.md5
b. AP : AP_R800XXU1CSI1_usr.tar.md5
c. CSC : CSC_OXA_R800OXA1CSI1_usr.tar.md5
Just make sure watch is still connected (IP address is shown in Odin software)
Press Start button. After about 10 minutes, flashing process completes. During my process, it had failed once on by showing on the Odin software. All I did was reboot the watch in same way in Download(Wireless) mode and do the process again.
Complete the setup on watch.
Connect the watch to WiFi, even if doesn’t have internet it is okay. Note down the IP address(Settings>Connections>Wifi>Wifi Networks><connected_network>IP address).
Enable debugging on the watch(Settings> About Watch> Debugging).
REBOOT THE WATCH. Debugging doesn’t connect without it.
Now setup sdb to access your laptop.
a. Extract SDBstarterKidv1.zip
b. Extract zip inside it as per your Laptop/PC OS.
c. Run install.bat/install.sh as per OS.
d. Then go inside data/tools and run ansicon.exe as administrator. It will launch a command prompt window.
e. In it type sdb connect watch_ip_address
f. It will show connected.
I would recommend taking backup of your current CSC info. To do so type following two command in sdb:
a. sdb pull /csa/csc/csc-active-customer.inf
b. sdb pull /csa/imei/prodcode.dat
This will copy those two files in you current directory. The 3 ending letters are your current CSC code.
Now to change CSC, type following in your command prompt window:
a. sdb shell
b. You will get something like sh-3.2$ for prompt.
c. Then type: launch_app csc-manager.csc-pre-configuration
d. It will show “... successfully launched”
e. Now look on your watch, switch to CSC you want to . I selected XAR which is for US and at top of the list.
f. Touch on XAR and then it will reset your watch.
Now check if you have the Samsung pay app in the watch. If not there, You need to open the Galaxy Wearable app in the phone after pairing with watch.
In it, you will find the Samsung Pay option. Click on it, you will be asked to download the Samsung Pay plugin. Install from play store if available in your country or download it from apkmirror. If your phone is rooted, before starting the plugin app after installing it, hide root from the app in Magisk hide or something equivalent.
One thing to note over here is I had used US VPN to connect and setup over phone now, so if it doesn’t work in normally way, try using VPN. I used the TurboVPN, it has free servers too.
Do the setup on phone as well as watch by entering the card details.
At this point, the watch has Samsung pay, but it is still on the old firmware. And unfortunately, update operation from Galaxy Wearable app doesn’t show an update available. So, we need to again flash the latest firmware using Odin.
Repeat steps from step 5 till step 13.
Since the watch will be reset, the Samsung pay icon from watch goes away again, but it is available in the Galaxy Wearable app. Open it, sign in it. If card details were already added, they can be imported back from Samsung account.
Done!
Multiple times during the flashing process, either my WiFi disconnected from laptop or it failed due to some reason, but I was able to always reboot the watch in Download mode again.
I have some screenshots/images too, I will upload them soon.

Thank you @Mirhawk.
One of the best & most detailed explaination.

Does it matter which region firmware you download or are they the same? I Have SM-R810. Also, do you need to have Samsung Pay in the phone?

Mirhawk said:
So I recently got a Samsung Galaxy........
Click to expand...
Click to collapse
Thank you for a great explanation. I was stuck on R800XXU1CSD6 and finaly was able to upgrade to R800XXU1DSL1.
My R800 did not get any OTA after I change csc code to get Pay working.
Samsung Pay still works after this upgrade

"9. After connecting, watch will continuously show “Connection timed out error 110”. This is fine"
Anyway after my laptop was connected to SM-R800 i changed network settings (changed network for "public") and this error went off from my watch. Of course I switched off antivirus and windows firewall at the beginning.
After all I had the same problem when was installing last process of this instruction (new version). At first time i had fail but second time worked (maybe low signal from laptop or something dont know)

Which firmaweres do i need to download for SM-R810 with 4.0.0.7 ? I need to downgrade for chance CSC tu UK for samsung pay. I have SM-R810 with the DSL1 firmware right now.

does anyone know, why update no longer works after changing csc?

Just wanted to write here that it worked for me here in AUS, brought a SM-R800 grey import. Just follow the above directs to the T. lol just wanted to add that "e. In it type sdb connect watch_ip_address" watch_ip_address is your watches IP! rooky error. lol. also booting into AP mode I found tricky too but using odin and the cmd command the easy part! thanks again

It works perfectly. The key is to know what firmware do you need.

Mirhawk said:
So I recently got a Samsung Galaxy Watch (SM-R800), but to my dismay, Samsung Pay was not available in it by default.
By searching on xda, I found out that running some simple sdb commands would do it, but unfortunately, it worked only in 4.0.0.4 version and mine had 4.0.0.7 out of the box.
Then I found out that the watch can be easily downgraded 4.0.0.4 and then perform the sdb shell commands, setup Samsung pay and upgrade to latest version again. Although finding the process was easy, finding the required firmware files took a lot of time, going through the threads and all. But I found them eventually.
To make it easier to come back to and to help wandering souls if any, I decided to create this thread.
Although I have written for SM-R800 specifically, it may work on other watches too as the firmware link has firmware for other watches too(R810,R805F,R815F,R805U,R815U).
Download links:
NetOdin3_1.0.zip
SDBstarterKidv1.zip
SDBstarterKidv1.zip
Firmware's can be found here : https://4pda.ru/forum/index.php?showtopic=978373&st=80#entry92121314
Following is the process I followed:
Charge watch, at least 90% . This is required as your watch will reboot many times during the process.
Set screen timeout to 5 minutes
Backup your data if any. This process resets watch multiple times.
Keep the WiFi password simple/open, you have to enter it multiple times in the watch during process.
Download
a. Old firmware
b. New Firmware
c. NetOdin3_1.0.zip
d. SDBstarterKidv1.zip
Reboot watch to Download (wireless). To do this:
a. Press and hold power button
b. When you see rebooting on screen, press power button a few times
c. You will get a menu like below
d. By pressing power button, highlight ‘Download (wireless)’ mode and then press power button long to select it
This puts the watch in WPS mode, but we need AP mode in this case. To switch to AP mode, press power button twice, you will see image as below:
Now on laptop/PC, connect to an open WiFi which has name of the device. In My case it was SM-R800.
After connecting, watch will continuously show “Connection timed out error 110”. This is fine.
Now open NetOdin3.exe as administrator. After sometime, the NetOdin window will show IP address of the watch and <ID:0/001> 192.168.49.1 in the Log window. If it is not connecting, try disabling firewall (or Windows defender).
Now once the watch is connected, select the appropriate files in three boxes. For me it was:
a. BL : BL_R800XXU1CSI1_usr.tar.md5
b. AP : AP_R800XXU1CSI1_usr.tar.md5
c. CSC : CSC_OXA_R800OXA1CSI1_usr.tar.md5
Just make sure watch is still connected (IP address is shown in Odin software)
Press Start button. After about 10 minutes, flashing process completes. During my process, it had failed once on by showing on the Odin software. All I did was reboot the watch in same way in Download(Wireless) mode and do the process again.
Complete the setup on watch.
Connect the watch to WiFi, even if doesn’t have internet it is okay. Note down the IP address(Settings>Connections>Wifi>Wifi Networks><connected_network>IP address).
Enable debugging on the watch(Settings> About Watch> Debugging).
REBOOT THE WATCH. Debugging doesn’t connect without it.
Now setup sdb to access your laptop.
a. Extract SDBstarterKidv1.zip
b. Extract zip inside it as per your Laptop/PC OS.
c. Run install.bat/install.sh as per OS.
d. Then go inside data/tools and run ansicon.exe as administrator. It will launch a command prompt window.
e. In it type sdb connect watch_ip_address
f. It will show connected.
I would recommend taking backup of your current CSC info. To do so type following two command in sdb:
a. sdb pull /csa/csc/csc-active-customer.inf
b. sdb pull /csa/imei/prodcode.dat
This will copy those two files in you current directory. The 3 ending letters are your current CSC code.
Now to change CSC, type following in your command prompt window:
a. sdb shell
b. You will get something like sh-3.2$ for prompt.
c. Then type: launch_app csc-manager.csc-pre-configuration
d. It will show “... successfully launched”
e. Now look on your watch, switch to CSC you want to . I selected XAR which is for US and at top of the list.
f. Touch on XAR and then it will reset your watch.
Now check if you have the Samsung pay app in the watch. If not there, You need to open the Galaxy Wearable app in the phone after pairing with watch.
In it, you will find the Samsung Pay option. Click on it, you will be asked to download the Samsung Pay plugin. Install from play store if available in your country or download it from apkmirror. If your phone is rooted, before starting the plugin app after installing it, hide root from the app in Magisk hide or something equivalent.
One thing to note over here is I had used US VPN to connect and setup over phone now, so if it doesn’t work in normally way, try using VPN. I used the TurboVPN, it has free servers too.
Do the setup on phone as well as watch by entering the card details.
At this point, the watch has Samsung pay, but it is still on the old firmware. And unfortunately, update operation from Galaxy Wearable app doesn’t show an update available. So, we need to again flash the latest firmware using Odin.
Repeat steps from step 5 till step 13.
Since the watch will be reset, the Samsung pay icon from watch goes away again, but it is available in the Galaxy Wearable app. Open it, sign in it. If card details were already added, they can be imported back from Samsung account.
Done!
Multiple times during the flashing process, either my WiFi disconnected from laptop or it failed due to some reason, but I was able to always reboot the watch in Download mode again.
I have some screenshots/images too, I will upload them soon.
Click to expand...
Click to collapse
i did all the steps, i downloaded the samsung pay plug in, but when i run it, it sais that the watch has been modified and doesn't work...
how can i fix this?