Develop Bugs

Looking stock firmware for SM-R805F

Hi everyone,
I just recently got a SM-R805N (Korea LTE ver) and want to change its region.
However the CSC variants in the stock only contains Korea telecom (as mentioned in the CSC thread by ecoco1)
I am trying to use the old fashion way: flash in the combination firmware, switch the CSC and then flash back to stock, in which, the CSC I am looking for is in SM-R805F version
However, I cannot find any free source for SM-R805F firmware online... all those available , also in this XDA forum, is only for bluetooth version.
Would anyone in XDA able to source the R805F firmware? (best to have both combination & stock?)
Thanks a million

worldcupxda said:
Hi everyone,
I just recently got a SM-R805N (Korea LTE ver) and want to change its region.
However the CSC variants in the stock only contains Korea telecom (as mentioned in the CSC thread by ecoco1)
I am trying to use the old fashion way: flash in the combination firmware, switch the CSC and then flash back to stock, in which, the CSC I am looking for is in SM-R805F version
However, I cannot find any free source for SM-R805F firmware online... all those available , also in this XDA forum, is only for bluetooth version.
Would anyone in XDA able to source the R805F firmware? (best to have both combination & stock?)
Thanks a million
Click to expand...
Click to collapse
I will grab it shortly for you

deadman96385 said:
I will grab it shortly for you
Click to expand...
Click to collapse
Million thanks!

worldcupxda said:
Million thanks!
Click to expand...
Click to collapse
Here is the R805FXXU1CSA3 firmware
https://www.androidfilehost.com/?fid=1395089523397890804
Here is the FT40_R805FXXU1ARJ1 Combination firmware
https://www.androidfilehost.com/?fid=1395089523397890811
They are the latest ones i could pull, hope it helps

Caution.
Since Gear S3 it is NO good idea to flash wrong Firmware nor wrong parts... to LTE variants...
You could end like this:
https://forum.xda-developers.com/smartwatch/gear-s3/sm-r765f-teardown-t3659431
https://forum.xda-developers.com/smartwatch/gear-s3/please-help-bricked-gear-s3-sm-r765s-t3665558
I have no Galaxy Watch... but this means not I have no idea how dangerous it is... if you doing """experiments"""...
Example:
https://forum.xda-developers.com/showpost.php?p=78545468&postcount=74
Only as info.
Additional info...
Not tested what happens with CSC only... BUT be sure it is not less dangerous... because partition PIT is inside CSC and netOdin AUTOMATIC write this file to device...
Suggestion...
Study offline...
You can extract files with 7zip and compare...
rootfs.img needs some other Tools or Linux... or...
Best Regards

adfree said:
Caution.
Since Gear S3 it is NO good idea to flash wrong Firmware nor wrong parts... to LTE variants...
You could end like this:
https://forum.xda-developers.com/smartwatch/gear-s3/sm-r765f-teardown-t3659431
https://forum.xda-developers.com/smartwatch/gear-s3/please-help-bricked-gear-s3-sm-r765s-t3665558
I have no Galaxy Watch... but this means not I have no idea how dangerous it is... if you doing """experiments"""...
Example:
https://forum.xda-developers.com/showpost.php?p=78545468&postcount=74
Only as info.
Additional info...
Not tested what happens with CSC only... BUT be sure it is not less dangerous... because partition PIT is inside CSC and netOdin AUTOMATIC write this file to device...
Suggestion...
Study offline...
You can extract files with 7zip and compare...
rootfs.img needs some other Tools or Linux... or...
Best Regards
Click to expand...
Click to collapse
Thanks adfree, but its too late... I have already bricked my brand new galaxy watch...
Now the watch wont go into any mode below. All it does is have a flash of horizontally line screen, consistently.
continue
factory command
recovery
download (wireless)
Tried the method "press 2 seconds, release 1 second" does not work, think it corrupted the partition.
Only mode still work is "download" which shows the screen correctly. What make it worse is I reset the watch before doing this and forget to turn off activation lock (but I have my own user name and password, think that does not make it worse then?)
Appreciate if any idea on how to tackle this... am already thinking about buying the usb connector for odin flash...(hopefully something will make it work again...)

Suggestion, if you want try it self at home....
Look into this post:
https://forum.xda-developers.com/showpost.php?p=78545468&postcount=74
Look into Video...
You can also click around this Thread... to see diffferent "solutions"...
Security prevent netOdin use... IMHO no way without USB to flash again.
If you have POGO Connector... Odin...
Then try FIRST to flash SM-R805N...
I see at this time it is not leaked...
So you need luck to flash SM-R805N Firmware...
Hopefully Warranty Void will still:
0 0x0000
Seems 3 SM-R805N Stock Firmware leaked:
Code:
R805NKOU1ARK8
R805NKOU1ARJ6
R805NKOU1ARHJ
You can PM me... if you need Help with POGO...
Best Regards

Sent you a pm thanks very much, i have not yet able to watch the video as im at work, but i think i need the items below:
R805N stock firmware
POGO Cable for usb connection
anything else would i need?

worldcupxda said:
Sent you a pm thanks very much, i have not yet able to watch the video as im at work, but i think i need the items below:
R805N stock firmware
POGO Cable for usb connection
anything else would i need?
Click to expand...
Click to collapse
Sorry to hear it bricked, here is at least R805N normal firmware, there isn't any combo firmware that I can find atm
https://www.androidfilehost.com/?fid=1395089523397891319

Thank you @deadman96385 for the firmware
Hi adfree, here is the photo of the "Download" screen
Now i need to get my hand on the cable to try it out...

Thanx for Photo. :good:
Good:
A
SM-R805N to see...
So sboot.bin is not overwritten...
B
Warranty void still 0 0x0000
So Knox not dripped... BUT you have to wait for final result after Repair Flash...
Not so good = IMHO bad...
Reactivation Lock is ON...
This means MORE f&%ing Security...
As "we" have only Stock Firmware...
If no luck then also Warranty Void Value will change... maybe.
P.S...
partition.pit aka PIT is 1:1 same between SM-R805F and SM-R805N... except the RSA 2048 Signature crap at the end of file.
Best Regards

adfree said:
Thanx for Photo. :good:
Good:
A
SM-R805N to see...
So sboot.bin is not overwritten...
B
Warranty void still 0 0x0000
So Knox not dripped... BUT you have to wait for final result after Repair Flash...
Not so good = IMHO bad...
Reactivation Lock is ON...
This means MORE f&%ing Security...
As "we" have only Stock Firmware...
If no luck then also Warranty Void Value will change... maybe.
P.S...
partition.pit aka PIT is 1:1 same between SM-R805F and SM-R805N... except the RSA 2048 Signature crap at the end of file.
Best Regards
Click to expand...
Click to collapse
thanks... I should be able to get the POGO wire mid next week, will update you the result....!

My Galaxy is back alive! Thanks everyone in this thread. Tested the following:
Install R805N firmware: Download mode: Works
Install R805F firmware:
Download mode: PIT fail instantly, without install
Download (Wireless): Able to complete the install -> Fail warning in red -> Bricked
Tried for combination firmware, or CSC only, same result
Guess I will never have chance to change my CSC then...? (Unless there is a combination R805N available which has all CSC countries inside?)

hi did you manage to change the region? I have the same watch.

Hello everybody,
i need R800XXU1BSA4
SM-R800 galaxy watch 46mm bluetooth version firmware
can anyone help me ?
thank you

Malor1k said:
hi did you manage to change the region? I have the same watch.
Click to expand...
Click to collapse
no i am not able to change, as mentioned above, the original firmware does not have other CSC included, flashing any other firmware will brick the watch
i think it will only be possible if R805N has a combination firmware release

Looking for firmare
Hello,
I have a Galaxy watch,the LTE version - I got it as a present from a friend abroad and in order to connect to domestic mobile provider I need to use
the latest firmware. That is R805FXXU1FSL3
I 've searched as much as possible online to track it but without success.
Can someone please help?
Thank you very much

Hey ! same issue here. Did we find a solution? 
 @worldcupxda whats the update?

Hi I have Galaxy watch 46mm LTE INDIA version, after by changing CSC to Australia by *#272*IMEI# to get Samsung Pay. After that I'm not able to make calls through Stand Alone mode.
I have tried to the change the CSC through COMBINATION, But Push data is getting denied.
Kindly provide me a link for INDIA stock Firmware and help me out.
Million Thanks.

Suprith Jadhav said:
Hi I have Galaxy watch 46mm LTE INDIA version, after by changing CSC to Australia by *#272*IMEI# to get Samsung Pay. After that I'm not able to make calls through Stand Alone mode.
I have tried to the change the CSC through COMBINATION, But Push data is getting denied.
Kindly provide me a link for INDIA stock Firmware and help me out.
Million Thanks.
Click to expand...
Click to collapse
Did you find any solution

Samsung Pay for SMR800 Tizen 4.0.0.7

Hi all can somebody help installing Samsung Pay for India
I connected watch through sdb connect and when i run
command launch_app csc-manager.csc-pre-configuration it says successfully launched but nothing happens on my Galaxy Watch verion R800XXU1DSL1 tizen 4.0.0.7
Used SDBstarterKidv1

Downgrade...
https://forum.xda-developers.com/smartwatch/galaxy-watch/update-gw-r800-t3936370
Simple use older Firmware as DRK2... DSL1...
If you choose XAR for USA... then choose this Firmware:
Code:
R800XXU1[B][COLOR="Green"]CSE1[/COLOR][/B]
IMHO here SDB Commands still work...
In theory somehwere Thread or Post...
In newer Firmware like DSL1 Samsung increased Security...
Best Regards

After downgrade and changing the region to enable Samsung pay.
If I again update to the latest firmware version will the Samsung pay still be there?

Yes, if you changed the CSC to get Samsung Pay, it will still be there after an update. As far as I know, the availability of Samsung Pay is CSC bound, not firmware bound.

congusto said:
Yes, if you changed the CSC to get Samsung Pay, it will still be there after an update. As far as I know, the availability of Samsung Pay is CSC bound, not firmware bound.
Click to expand...
Click to collapse
i downgraded changed the CSC, now samsung pay is on the watch but it wont open on my phone

I have a same problem too. "successfully launched" but nothing happend
R805FXXUFSK2
SM-R805FZSATMH
The downgrade is it the solution for me ? Which version ?

The downgrade is it the solution for me ? Which version ?
Click to expand...
Click to collapse
Good question... according to your "incomplete" info... your active CSC could be TMH...
Then it seems OXA region.
Code:
R805FXXU1FSK2/R805F[B]OXA[/B]1FSK2/R805FXXU1FSK2
To be sure... simple enter magic Code:
Code:
*#1234#
And compare with my text...
Best Regards

adfree said:
Good question... according to your "incomplete" info... your active CSC could be TMH...
Then it seems OXA region.
Code:
R805FXXU1FSK2/R805F[B]OXA[/B]1FSK2/R805FXXU1FSK2
To be sure... simple enter magic Code:
Code:
*#1234#
And compare with my text...
Best Regards
Click to expand...
Click to collapse
My CSC with the magic code is R805FOXA1FSK2
AP: R805FXXU1FSK2
CP: R805FXXU1FSK2

Hi guys, I'm from Brazil, and my FW is the R810XXU1DSL1.
I need to change the csc to ZTO... same problem, nothing happens.
Can some one help me?
What downgrade do I have to do?

You need to downgrade to any firmware older than DSL1 with NetOdin, as described elsewhere on this forum. Then changing the CSC will work.

Hi. I have the same problem. I'm now going to downgrade with the procedure in this topic.
I just have a doubt about which firmware I should use. This are my current info:
Watch: SM-R800
One UI: 1.5
Tizen: 4.0.0.7
Current FW: R800XXU1DSL1
Knox: 2.4.0
Bought on USA
Need to enable Samsung Pay in Brazil (I believe need to be changed to ZTO)
Can someone please which firmware I should try? First and second options?
Thanks.

adfree said:
Downgrade...
https://forum.xda-developers.com/smartwatch/galaxy-watch/update-gw-r800-t3936370
Simple use older Firmware as DRK2... DSL1...
If you choose XAR for USA... then choose this Firmware:
Code:
R800XXU1[B][COLOR="Green"]CSE1[/COLOR][/B]
IMHO here SDB Commands still work...
In theory somehwere Thread or Post...
In newer Firmware like DSL1 Samsung increased Security...
Best Regards
Click to expand...
Click to collapse
On phones, usually downgrading can result in brick.
In the galaxy watch this does not happen can I downgrade to a previous version without fear of it happening?

any update yet guys
i am stuck with tyhe same problem.is there a way solution yet?

Impossible to update my Watch Active

Hello. I had an OXE CSC on my SM-R500 (Tizen 4.0.0.7) and I wanted to get a XEF CSC. I flashed the watch with R500XXU1BSB7 with Tizen 4.0.0.3. But, I can't install the update (R500XXU1DSL1) with the in-app plugin. When the update is downloaded and transferred on the watch, I start the installation. But, few seconds later (close to 96%), the installation progress jumps to 100%, the watch reboots and I have an error message who tells me the watch can't be update and asks me to go in a Samsung Customer Service.
Who can help me please ?

1 way is to use netOdin and flash self:
https://forum.xda-developers.com/showpost.php?p=81261659&postcount=133
Be sure you take Firmware for SM-R500.
If you need help with netOdin... look at Youtube or look here:
https://forum.xda-developers.com/showpost.php?p=73503787&postcount=150
Best Regards

adfree said:
1 way is to use netOdin and flash self:
https://forum.xda-developers.com/showpost.php?p=81261659&postcount=133
Be sure you take Firmware for SM-R500.
If you need help with netOdin... look at Youtube or look here:
https://forum.xda-developers.com/showpost.php?p=73503787&postcount=150
Best Regards
Click to expand...
Click to collapse
Thanks.. Will I be able to flash it and get Samsung Pay France ?

Will I be able to flash it and get Samsung Pay France ?
Click to expand...
Click to collapse
Good Question.
XEF is inside this package... you can check by decompress and extract files from csc.img with Tool:
Code:
7Zip
I had an OXE CSC
Click to expand...
Click to collapse
This looks to me as no valid CSC...
OXE I saw only as Region Code...
In case of SM-R500 this is wrong... we have only OXA Region with all CSC / Sales Codes inside...
So IMHO something is not 100 % correct...
IMHO check your priorites...
All I know about Samsung Pay is...
Nobody can be 100 % sure... because few Cards not accepted... Region blocked etc... blabla...
Best Regards

I'm with the same problem.
After done the firmware downgrade, I activated the Samsung Pay (but isn't works), and i'm impossible to do firmware upgrade via app.
Do you solve your problem?

and i'm impossible to do firmware upgrade via app.
Click to expand...
Click to collapse
Your Firmware on your SM-R810 is now?
Enter this Code:
Code:
*#1234#
This shows all Firmware related Infos...
Best Regards

adfree said:
Your Firmware on your SM-R810 is now?
Enter this Code:
Code:
*#1234#
This shows all Firmware related Infos...
Best Regards
Click to expand...
Click to collapse
My firmware is 4.0.4, after done the downgrade.
How can I enter *#1234# in Galaxy Watch?

Andre Morais said:
My firmware is 4.0.4, after done the downgrade.
How can I enter *#1234# in Galaxy Watch?
Click to expand...
Click to collapse
4.0.4
Click to expand...
Click to collapse
This Info is useless.. not unique...
https://doc.samsungmobile.com/SM-R810/XAR/doc.html
You have R810XXU1CSG4 or R810XXU1CSE1...
*#1234# is like you call someone
Why you not flashed simple DSL1... latest Firmware... IMHO I gave you few times Link to DSL1...
Also here in this Thread DSL1 for SM-R810 is linked:
https://forum.xda-developers.com/showpost.php?p=81261659&postcount=133
DSL1 is latest for Brazil ZTO:
http://fota-cloud-dn.ospserver.net/firmware/ZTO/SM-R810/version.xml
Code:
R810XXU1DSL1/R810OXA1DSL1
Code:
R810XXU1[B]DTA4[/B]/R810OXA1DTA4
Is only in USA released... for CSC /Sales Code:
Code:
XAR
http://fota-cloud-dn.ospserver.net/firmware/XAR/SM-R810/version.xml
You can BUY this firmware from Easy Firmware for instance...
IMHO not leaked yet for free...
And still no idea why only for USA available...
Best Regards

adfree said:
This Info is useless.. not unique...
https://doc.samsungmobile.com/SM-R810/XAR/doc.html
You have R810XXU1CSG4 or R810XXU1CSE1...
*#1234# is like you call someone
Why you not flashed simple DSL1... latest Firmware... IMHO I gave you few times Link to DSL1...
Also here in this Thread DSL1 for SM-R810 is linked:
https://forum.xda-developers.com/showpost.php?p=81261659&postcount=133
DSL1 is latest for Brazil ZTO:
http://fota-cloud-dn.ospserver.net/firmware/ZTO/SM-R810/version.xml
Code:
R810XXU1DSL1/R810OXA1DSL1
Code:
R810XXU1[B]DTA4[/B]/R810OXA1DTA4
Is only in USA released... for CSC /Sales Code:
Code:
XAR
http://fota-cloud-dn.ospserver.net/firmware/XAR/SM-R810/version.xml
You can BUY this firmware from Easy Firmware for instance...
IMHO not leaked yet for free...
And still no idea why only for USA available...
Best Regards
Click to expand...
Click to collapse
I have 4.0.4 R810XXU1CSE1. My Watch was bought in USA, so when I came back to Brazil the Samsung Pay not worked.
So I done the downgrade to activate Pay and worked. But, now i'm not able to add card and to do uograde too. LOL =/ . I didn't use the DSL1 because isn't possible to chagem CSC in 4.0.7.
What do you recommend?

But after CSC Change you can use DSL1...
What ever you used,, will not changed by Firmware Update...
If you not change every 5 Minutes CSC...
IMHO you can flash DSL1...
And if you have no problems with R810XXU1CSE1... you can still use CSE1...
Depend on your flavor... on your needs...
Maybe try DSL1 with Samsung Pay... maybe more luck as Samsung Pay newer Version...
NO Garantie...
S Pay is Security crap and secured by Samsung by some funny and """mystique""" Voodoomagic and seems not all Cards supported.. real or virtual Cards
IMHO 1 Security Wall is Phone... Country Check...
Tooo many ?
No easy solution.
Best Regards

Great!! So I'll try flash to DSL1, and follow if will the nexts updates and S Pay will works too.
In time, via my serial, is this possible to check what was the default CSC of my watch?
Best regards.

R815F Change CSC with tizen 4.0.0.7

Hello there,
I am trying to change the CSC of my watch to enable samsung pay on my watch. Since tizen 4.0.0.7 Samsung has patched to old method, and to my understanding I have to install a combined framework in order to change the CSC as mention here
https://forum.xda-developers.com/smartwatch/galaxy-watch/changing-region-galaxy-active-2-t3983895
However I could not find a combination firmware for R815F only R815U. While I am fairly certain that it should be interchangeable as it is mentioned here with R825F and R825U, but I don't want to risk it.
Does anyone have experience with changing the CSC on a R815F using the combined firmware method?

Downgrade Firmware...
In other words use older Firmware...
So trick still work with SDB...
Best Regards

adfree said:
Downgrade Firmware...
Click to expand...
Click to collapse
Do you have a source I could try?

SM-R815F not yet...
Maybe help me with additonal details...
Your Region Code... OXA or OXX or something like this...
Easiest way to post all infos from:
Code:
*#1234#
Like you would call someone...
Best Regards
Edit 1.
On russian Forum...
https://forum.xda-developers.com/showpost.php?p=81755081&postcount=65
WARNING!
Check first your Region Code to be sure you have valid ESD6 Firmware for your CSC... otherwise you have no chance to update...
For SM-R815F not much Firmware free available...
Edit 2.
ESD6 could be OXA...
https://easy-firmware.com/index.php?a=downloads&b=folder&id=35897

adfree said:
SM-R815F not yet...
Maybe help me with additonal details...
Your Region Code... OXA or OXX or something like this...
Easiest way to post all infos from:
Code:
*#1234#
Like you would call someone...
Best Regards
Edit 1.
On russian Forum...
https://forum.xda-developers.com/showpost.php?p=81755081&postcount=65
WARNING!
Check first your Region Code to be sure you have valid ESD6 Firmware for your CSC... otherwise you have no chance to update...
For SM-R815F not much Firmware free available...
Edit 2.
ESD6 could be OXA...
https://easy-firmware.com/index.php?a=downloads&b=folder&id=35897
Click to expand...
Click to collapse
Hey man it's been a while, I just wanted to thank you for your help here and in an other post where you linked to a video to how to unbrick a galaxy watch.
My watch is doing great now thanks to you!
cheers!

Can i change csc with tizen 5.5.0.1?

Hello everybody. i am from Greece and today i updated my gw2 to Tizen 5.5.0.1. can i change the csc so i can install the ecg and bp apps? i tried other methods to install ecg and bp app but ecg wont work( hope my sensor is ok). is there any solution?
regards

oranje1021 said:
Hello everybody. i am from Greece and today i updated my gw2 to Tizen 5.5.0.1. can i change the csc so i can install the ecg and bp apps? i tried other methods to install ecg and bp app but ecg wont work( hope my sensor is ok). is there any solution?
regards
Click to expand...
Click to collapse
Yes you.
I changed from XAR to KOO after upgrading to 5.5.0.1
Sent from my SM-N975F using Tapatalk

M.Noury said:
Yes you.
I changed from XAR to KOO after upgrading to 5.5.0.1
Sent from my SM-N975F using Tapatalk
Click to expand...
Click to collapse
how did you do it? did you only pull and push csc file withe the correct csc code? KOO is preffered than XAR usa?

oranje1021 said:
how did you do it? did you only pull and push csc file withe the correct csc code?
Click to expand...
Click to collapse
Flashed combination rom
Pushed the files with update csc code
Flashed 3 files rom
Sent from my SM-N975F using Tapatalk

Yes I moved from XAR 5.5.0.1 to DBT, because I had problem with wifi on XAR.

M.Noury said:
Flashed combination rom
Pushed the files with update csc code
Flashed 3 files rom
Sent from my SM-N975F using Tapatalk
Click to expand...
Click to collapse
i asked you because because i thouth that the roms available are previous than the 5.5.0.1 i am on now.
so if i do this method (How To Change Region On Galaxy Watch Active 2 | How To Get Samsung Pay On Watch Active 2 TechnoProz), i can get the official us 5.5.0.1 and the official ecg and bp apps?
i thank you again for your time.

any ideas? thanks!

oranje1021 said:
any ideas? thanks!
Click to expand...
Click to collapse
+1, same question

It makes sense to differ between LTE crap like SM-R825F and so on...
And BT only crap... SM-R820 blabla...
Because BT only devices are easier to handle... :good: :good:
If you have SM-R820 or SM-R830... and you are on CTI4... you can use also my rooted files... to get ROOT access.
This is the whole magic...
You need ROOT.
This is why we flash Combination Firmware, because ROOT access inside.
CTI4 Root for SM-R820:
https://forum.xda-developers.com/showpost.php?p=83640791&postcount=937
CTI4 Root for SM-R830
https://forum.xda-developers.com/showpost.php?p=83653845&postcount=938
Only as info.
Best Regards

I am having trouble downloading files - antivirus keeps blocking says malware / ransomware any ideas besides disabling antivirus software?

ajb_111 said:
I am having trouble downloading files - antivirus keeps blocking says malware / ransomware any ideas besides disabling antivirus software?
Click to expand...
Click to collapse
Its natural response from your antivirus/antimalware software. After all this is considered for them "hacking tool" nevertheless...our dear friend @adfree wouldn't have any reason to try and infect anyone...for what?? just think his timeless efforts of hard working to get this tool ready for you, FREE of charge to use.....sometimes comments like this leave me speechless...but i think its about time for everyone, to speak freely how they consider appropriate...

This has got lost in interpretation. No comment on adfree or anyone else who I know how much effort they put in and are such great helps to us all. Sorry if this is how it was received. My comment is the frustration of not being able to download because keep getting blocked and cannot turn off because of company policy... Sorry again

adfree said:
It makes sense to differ between LTE crap like SM-R825F and so on...
And BT only crap... SM-R820 blabla...
Because BT only devices are easier to handle... :good: :good:
If you have SM-R820 or SM-R830... and you are on CTI4... you can use also my rooted files... to get ROOT access.
This is the whole magic...
You need ROOT.
This is why we flash Combination Firmware, because ROOT access inside.
CTI4 Root for SM-R820:
https://forum.xda-developers.com/showpost.php?p=83640791&postcount=937
CTI4 Root for SM-R830
https://forum.xda-developers.com/showpost.php?p=83653845&postcount=938
Only as info.
Best Regards
Click to expand...
Click to collapse
Dear friend
Could you please tell me If we some day want to roll back, can we? unroot posable or not? And how?
As you know in the samsung phones root will trip knox and binary changed and even flashing official firmware can not fixed it and we never can use samsung pay or secure folder!
Sorry for bad english

@hamid.seyedani
Warranty Void 0 0x0000 aka Knox untouched.
So Samsung Pay will still work...
Unroot... easiest way IMHO to flash Stock Firmware of your Choice...
Then also FOTA update method enabled again...
Best Regards

Don't want to brick again
l did the following steps to change CSC
thanks @adfree for procedure this part worked ..
Rooted files for SM-R820 CTI4 (Tizen 5.5.0.1)
Round 1.
With netOdin
Combination Firmware RAMDISK from SM-R500 to disable Security checks...
Code:
ramdisk_only_smR500_ASL2_FT40.tar
Round 2.
With netOdin
Code:
2020_October_smR820_CTI4_ROOT_v1.tar
Was successfull thanks @adfree in rooting my device then tried to change CSC as follows:
Afer device restart regularly
Connect watch to wifi and with sdb did the following:
sdb connect
sdb root on
sdb shell
sdb pull /csa/csc/csc-active-customer.inf
sdb pull /csa/imei/prodcode.dat
edit /csa/csc/csc-active-customer.inf and replace csc code (I entered KOO )
edit /csa/imei/prodcode.dat and replace last three characters to csc code you want
sdb push /csa/csc/csc-active-customer.inf
sdb push /csa/imei/prodcode.dat
reboot the device
run netodin again and select AP, BL and CSC to flash stock used stock rom R820XXU1CTI4
In the end watch rebooted instead of csc being KOO Korea csc was Singapore
Watch working fine not bricked second time but wrong csc...https://forum.xda-cdn.com/images/icons/icon9.gif
I think error is did not flash into recovery at two stages at before root stage and after changing csc and when reflashed stock rom am I correct?

Hello All,
I would like to be sure and don't brick my device.
I have BT SM-R820 currenty running R820XXU1CTJ5 with XAR CCS (changed in the past). Getting updates, SPay and ECG working, everything smooth.... except BP with lates updates.
Because of BP was kinda "disabled" for XAR I would like to move to BTU (UK) CCS. What I read about that it should do the trick because XAR is only problematic version.
Is it safe to use any older combination firmware to make the CCS chnage in general? Or it's being checked somehow?
If not is there a way for R820XXU1CTJ5 FW yet?
Thnaks a lot.

welcome.jn said:
Hello All,
I would like to be sure and don't brick my device.
I have BT SM-R820 currenty running R820XXU1CTJ5 with XAR CCS (changed in the past). Getting updates, SPay and ECG working, everything smooth.... except BP with lates updates.
Because of BP was kinda "disabled" for XAR I would like to move to BTU (UK) CCS. What I read about that it should do the trick because XAR is only problematic version.
Is it safe to use any older combination firmware to make the CCS chnage in general? Or it's being checked somehow?
If not is there a way for R820XXU1CTJ5 FW yet?
Thnaks a lot.
Click to expand...
Click to collapse
You can try with COMBINATION-FT40_R820XXU1ATH1 here https://drive.google.com/file/d/1USardEAYBlf3TnnlOapzc8zH3wx0nDxT/view?usp=sharing

Huy.tq said:
You can try with COMBINATION-FT40_R820XXU1ATH1 here https://drive.google.com/file/d/1USardEAYBlf3TnnlOapzc8zH3wx0nDxT/view?usp=sharing
Click to expand...
Click to collapse
Hi,
First of all thanks from you and others that are helping us with these things. Could you please provide me tutorial of something like that how to change CSC using this "COMBINATION-FT40_R820XXU1ATH1" bthw I'm running on active2 R820XXU1CTJ5-XAR CSC i want to change it to use BP monitor.

After I rooted galaxy active 2 updates stop working, samsung pay stop working saying "you made modifications to devices, contact us for help"
How to unroot galaxy active 2? They show numbers while rebooting, after I rooted them. No matter which firmware I flesh, alway that numbers

@forux
In theory I could help you...
But no idea yet what you have... Model Name...
And what your Goal is...
Best Regards