Hello,
I've been trying to find my answers on how to flash a AT&T GS9 SM-G960U with a T-Mobile S9 Stock Firmware\ROM.
I found this thread and although it's fairly close to what I am trying to do, I didn't want to post this there because they are talking about flashing U1 to U and I'm not sure if that is what I need to do exactly. https://forum.xda-developers.com/galaxy-s9/how-to/how-to-flash-u1-firmware-to-device-t3765200 from this thread, I've followed the initial steps and although Odin (Moded Odin v3.13.1 Raymonf ) tells me that the flash passed, upon reboot, the phone does not have the TMO firmware, it's still the original AT&T firmware. The only thing that it did do was add the TMO Visual VM icon\app.
I was informed of being able to download the TMO firmware from here: https://www.droiddosh.com/2018/04/samsung-galaxy-s9-sm-g960u-firmware-tmobile-usa-G960USQU1ARBG.html
Am I doing something wrong here? It seems that maybe these US models do not offer the OEM Bootloader unlocker option in developer settings unless you purchase the U1 version direct from Samsung that does not have a locked boot loader? I got this phone at no cost so that is also why I did not purchased from Samsung directly.
Any guidance and help would be appreciated.
Thank you
US carrier models have locked bootloaders, no way to root or install custom roms.
We should be able to flash between carrier versions/CSCs like we could with the S8, but the process is different and I've only read of a few people finding success in trying. The voicemail app you're seeing is due to flashing the T-Mobile userdata partition. This is the bloat partition - doesn't actually change device features, etc.
Any chance anybody has success doing this? It seems like a "Must Have" feature to switch carrier roms on the G960U between carriers, including Boot Screen/Logo, Firmware, Bloatware, etc.
All the goodies.
Any help?
Thank you,
I've done it!
dovid said:
Any chance anybody has success doing this? It seems like a "Must Have" feature to switch carrier roms on the G960U between carriers, including Boot Screen/Logo, Firmware, Bloatware, etc.
All the goodies.
Any help?
Thank you,
Click to expand...
Click to collapse
I've completed this task tonight thanks to some great help from a user that stepped me through it on a TMO Forum.
First an FYI, I first was able to flash my AT&T S9 version from SM-960U to a Stock SM-960U1. It worked great. After that, I was able to flash the TMO Rom and it's also working perfect. I'm not sure if it's required or not to flash the phone to a U1 first or if the TMO Rom can just be flashed. After I flashed the TMO firmware, I had no issues downloading and installing the latest TMO update. (My device is unlocked as well)
It's best to use Samsung switch first to backup your texts, pics, etc. first if you want to restore them to the device after completing the flash. The below instructions will start the phone up as if it was new out if the box.
Here is what I was provided with and the steps I followed.
To Flash the SM-G960U to a SM-G960U1
1. Allow\Enable USB Debugging in Developers settings.
2. Download the U1 Firmware here: https://androidfilehost.com/?w=files&flid=257063
(this is the U1 from Samsung, it's compressed but once extracted it will be around 4GB's of data.)
3. Download the ADB tools: https://devfiles.co/download/PDYvOWBg/platform-tools-latest-windows.zip. Create a folder on your desktop and name it ADB (for easy reference)
4. Download Odin: https://drive.google.com/file/d/10dSyPTuccP8Km9MnDrvbRdS-CAcgFZB3/view
5. From windows, run command prompt, in the command prompt type the following: cd C:\Users\XXX\Desktop\ADB
(XXX is your username)
6. Connect your phone to a USB port on your computer, your phone should prompt you to allow the connection to\from your computer. Allow the connection. Might be best to choose to "Always Allow"
7. Return to the command prompt and type in: adb devices You should see your device listed.
8. In the same command window, type in: adb reboot bootloader This will auto reboot your device into the "Download" mode.
9. Open and run Odin, add the corresponding tar files to the respective area's, in the "options tab" in Odin, make sure that only "Auto Reboot" and "F. Reset Time" is checked.
Click "Start" and the process will take a few minutes to complete.
Allow the device a few minutes to auto reboot and start up.
After you get through all the post boot setup screens, open a phone dial pad and type in, *#2263#. then make sure that all LTE bands are enabled.
Here you can find the SM-G960U T-Mobile Files: https://www.droiddosh.com/2018/04/samsung-galaxy-s9-sm-g960u-firmware-tmobile-usa-G960USQU1ARBG.html
Switching from U -> U1 -> U
B"H
Ok, thank you.
1. So stock G960U (Original Carrier) -> Flash to U1 -
2. Then, Go from G960U1 -> Stock G960U (Any Carrier)
Few questions:
1. Which CSC file are you using to flash -- CSC_HOME?
2. In moving from U1 -> U, do you need the final carrier SIM inside the phone?
I've tried this with a Verizon phone I'd like to convert to XFinity (CCT). I flashed the G960U VZW to G960U1 XXA. That worked fine. Then I flashed the G960U CCT rom, and the phone just boots up Verizon. When I check the CSC, it says "VZW/VZW/VZW", even though I flashed the CCT rom.
I don't have an XFinity sim card, so perhap that is the problem.
Any help would be great.
dovid said:
B"H
Ok, thank you.
1. So stock G960U (Original Carrier) -> Flash to U1 -
2. Then, Go from G960U1 -> Stock G960U (Any Carrier)
Few questions:
1. Which CSC file are you using to flash -- CSC_HOME?
2. In moving from U1 -> U, do you need the final carrier SIM inside the phone?
I've tried this with a Verizon phone I'd like to convert to XFinity (CCT). I flashed the G960U VZW to G960U1 XXA. That worked fine. Then I flashed the G960U CCT rom, and the phone just boots up Verizon. When I check the CSC, it says "VZW/VZW/VZW", even though I flashed the CCT rom.
I don't have an XFinity sim card, so perhap that is the problem.
Any help would be great.
Click to expand...
Click to collapse
You most likely will need a Xfinity Sim Card. I was able to convert my Xfinity Mobile S9 to AT&T by going to U1 firmware then inserting my AT&T sim card then flashing the AT&T U firmware.
ajairola said:
You most likely will need a Xfinity Sim Card. I was able to convert my Xfinity Mobile S9 to AT&T by going to U1 firmware then inserting my AT&T sim card then flashing the AT&T U firmware.
Click to expand...
Click to collapse
Where is the at&t u firmware? Currently on the unlocked firmware. Thanks
Savebig said:
Where is the at&t u firmware? Currently on the unlocked firmware. Thanks
Click to expand...
Click to collapse
Go to this thread (thanks @iBowToAndroid) and then look in the RB7 folder on Android File host.
Question
Does anyone know if you have to have the phone unlocked before changing over carriers? for example if i had a Galaxy S9 from Sprint and wanted to change the firmware to T-Mobile would it work or would it still be locked to Sprint? Thanks for your Help!
B AdamsHxC said:
Does anyone know if you have to have the phone unlocked before changing over carriers? for example if i had a Galaxy S9 from Sprint and wanted to change the firmware to T-Mobile would it work or would it still be locked to Sprint? Thanks for your Help!
Click to expand...
Click to collapse
Have the same question, but on my Verizon Note 8...
PieceofSlice said:
Have the same question, but on my Verizon Note 8...
Click to expand...
Click to collapse
I would check if your phone is already unlocked, Most Verizon phones come unlocked (unless you bought them from a Verizon Tent at Cosco or stores like that) Just put in another carriers sim card and check, if it is unlocked then you shouldnt have to flash anything, once you put in a different carrier sim it will tell you to restart your phone and once you do it will come up with the new carriers splash logo and apps
PieceofSlice said:
Have the same question, but on my Verizon Note 8...
Click to expand...
Click to collapse
In my experience all the carrier S9s are locked. You will need an unlock code from your carrier or an unlocking service.
Noob here: I’ve read that all US S9 models are the same in terms of hardware, is that true? Would that mean if I change the firmware from verizon to T-Mobile, it’ll be fully compatible?
Xamuyees said:
Noob here: I’ve read that all US S9 models are the same in terms of hardware, is that true? Would that mean if I change the firmware from verizon to T-Mobile, it’ll be fully compatible?
Click to expand...
Click to collapse
Yes! All 965U's, 965U1's, and 965W's are the exact same hardware, just different firmware.
For those of you that use TMO or U1 firmware on an unlocked ATT phone on TMO network, do you get a <Subject: NoSubject> before other people's texts in group texts? I've tried flashing U and U1 firmware several times as well as factory reset without being able to get rid of the subject line. Anyone have any insight or suggestions?
I was able to go from U1 to the att firmware. My question is why does samsung pass not work? I can see that the knox is not tripped and google play store is certified. Device status says official. Device is not rooted but Samsung pass thinks it is rooted. Why would this happen when all I did was install the carrier bundle?
(Newbie) doing what jrockz3000 did would allow root to be possible?
MFmvrdoc said:
(Newbie) doing what jrockz3000 did would allow root to be possible?
Click to expand...
Click to collapse
Unfortunately not. All North American S9s are not able to be rooted at this point.
ajairola said:
Unfortunately not. All North American S9s are not able to be rooted at this point.
Click to expand...
Click to collapse
Thank you man~
Odin link down
jrockz3000 said:
I've completed this task tonight thanks to some great help from a user that stepped me through it on a TMO Forum.
First an FYI, I first was able to flash my AT&T S9 version from SM-960U to a Stock SM-960U1. It worked great. After that, I was able to flash the TMO Rom and it's also working perfect. I'm not sure if it's required or not to flash the phone to a U1 first or if the TMO Rom can just be flashed. After I flashed the TMO firmware, I had no issues downloading and installing the latest TMO update. (My device is unlocked as well)
It's best to use Samsung switch first to backup your texts, pics, etc. first if you want to restore them to the device after completing the flash. The below instructions will start the phone up as if it was new out if the box.
Here is what I was provided with and the steps I followed.
To Flash the SM-G960U to a SM-G960U1
1. Allow\Enable USB Debugging in Developers settings.
2. Download the U1 Firmware here:
(this is the U1 from Samsung, it's compressed but once extracted it will be around 4GB's of data.)
3. Download the ADB tools: . Create a folder on your desktop and name it ADB (for easy reference)
4. Download Odin:
5. From windows, run command prompt, in the command prompt type the following: cd C:\Users\XXX\Desktop\ADB
(XXX is your username)
6. Connect your phone to a USB port on your computer, your phone should prompt you to allow the connection to\from your computer. Allow the connection. Might be best to choose to "Always Allow"
7. Return to the command prompt and type in: adb devices You should see your device listed.
8. In the same command window, type in: adb reboot bootloader This will auto reboot your device into the "Download" mode.
9. Open and run Odin, add the corresponding tar files to the respective area's, in the "options tab" in Odin, make sure that only "Auto Reboot" and "F. Reset Time" is checked.
Click "Start" and the process will take a few minutes to complete.
Allow the device a few minutes to auto reboot and start up.
After you get through all the post boot setup screens, open a phone dial pad and type in, *#2263#. then make sure that all LTE bands are enabled.
Here you can find the SM-G960U T-Mobile Files:]
Click to expand...
Click to collapse
Odin link down.
I have a "carrier-locked" ATT note 10 (SM-N975UZKEATT) that I would like to use on Tmobile.
1) Is the only thing required to get the phone working with Tmobile a carrier flash? Do you really no longer need to unlock the device (carrier unlock)?
2) any guides that show this process from att to tmobile?
Thanks
rogue1ne said:
I have a "carrier-locked" ATT note 10 (SM-N975UZKEATT) that I would like to use on Tmobile.
1) Is the only thing required to get the phone working with Tmobile a carrier flash? Do you really no longer need to unlock the device (carrier unlock)?
2) any guides that show this process from att to tmobile?
Thanks
Click to expand...
Click to collapse
You still need to get your device carrier unlocked before it will work on another carrier.
BladeRunner said:
You still need to get your device carrier unlocked before it will work on another carrier.
Click to expand...
Click to collapse
Thanks for the clarification
rogue1ne said:
I have a "carrier-locked" ATT note 10 (SM-N975UZKEATT) that I would like to use on Tmobile.
1) Is the only thing required to get the phone working with Tmobile a carrier flash? Do you really no longer need to unlock the device (carrier unlock)?
2) any guides that show this process from att to tmobile?
Thanks
Click to expand...
Click to collapse
Adding a little more to this:
1.) As an option (if preferred) you can most likely just keep the firmware installed on the phone and use it as it is. Tmobile is rather friendly with BYOD compared to AT&T. The phone will reconfigure some settings based on the settings that the Tmobile SIM card will have on it. Once unlocked just put the Tmobile sim card in and that should be all it takes. You may need to double check the APN settings though to make sure they are complete and accurate.
2.) Just look/search/research and you will find the multitude of discussions and tutorials on this. The process is the same as on the S9+. You won't have any problems finding out how to do this.
On T-Mobile Galaxy Note 10+ SM-N975U I've noticed "com.tmobile.pr.adapt" running as service. This is draining battery. The phone is Network unlocked, so my question is should I simply use Odin Patched and flash US Unlocked SM-N975U1 with XAA CSC on it? I could not figure out the actual function of that running process.
Thank you in advanced!
Have you tried removing it via adb? In the past I used package disabler but no longer use that or own t-mobile branded devices
visualpro said:
On T-Mobile Galaxy Note 10+ SM-N975U I've noticed "com.tmobile.pr.adapt" running as service. This is draining battery. The phone is Network unlocked, so my question is should I simply use Odin Patched and flash US Unlocked SM-N975U1 with XAA CSC on it? I could not figure out the actual function of that running process.
Thank you in advanced!
Click to expand...
Click to collapse
It's part of the T-Mobile app. If you're not interested in using the ADB commands, or, using a package disabler app to "freeze" the app, this is the next best thing to do (probably seen this when you initially set up your phone when new/after a factory reset). It basically/supposedly turns off the worst part of the "com.tmobile.pr.adapt".
https://forum.xda-developers.com/showpost.php?p=64805313&postcount=28
I just package block it... some say you can disable it in it's app settings as well.
Should be listed as a installed app in settings.
Thank you all! I was able to simply flash the phone with the U1 firmware. Since the phone is unlocked anyway, I'm really enjoying using the US unlocked firmware.. No more bloatware.. Am able to use T-Mobile without any issues..
Thanks
So roughly following this thread - https://forum.xda-developers.com/galaxy-s20-fe/how-to/t-mobile-firmware-conversion-to-unlocked-t4172347
Thought I'd try it on my At&t branded device, and give a little walkthrough.
1. Make sure you have Samsung drivers installed https://www.samsung.com/us/business/support/owners/product/galaxy-s20-fe-5g-unlocked/
2. I had to use a patched version of Odin 3.14.1 linked here https://forum.xda-developers.com/android/software/patched-odin-3-13-1-t3762572
3. The firmware I went with https://samfw.com/firmware/SM-G781U1/ATT/G781U1UEU1ATIG
4. Unzip all files
5. Boot Samsung phone in Download Mode (hold Home + Power + Volume Down buttons / hold Volume Down + Bixby buttons then plug-in cable) or adb reboot download
6. Open Odin (dismiss any warnings at your own risk) add BL,AP,CP, and I used Home CSC (does not wipe user data) in the CSC slot (can use regular CSC if you want a full wipe)
7. Run, should auto reboot, and enjoy less At&t junk
Model number before was SM-G781U
Model number after is SM-G781U1/DS
Build number before was G781USQU1ATI9
Build number now is G781U1UEU1ATIG
Have not tested At&t wifi calling because I don't use it, but I've read that it doesn't work
Also OEM unlock is still not under dev options
Great [emoji106]. FYI, for people that wonder if firmware flashing will unlocked network carriers then no.
Sent from my SM-G781U1 using Tapatalk
I guess the question is, why flash unlocked model if no OEM Unlock is available and you lose features from the carrier?
tlxxxsracer said:
I guess the question is, why flash unlocked model if no OEM Unlock is available and you lose features from the carrier?
Click to expand...
Click to collapse
No At&t bloatware
tlxxxsracer said:
I guess the question is, why flash unlocked model if no OEM Unlock is available and you lose features from the carrier?
Click to expand...
Click to collapse
I always buy Samsung unlocked device, but since T-mobile offered a great discount I go with them. Since I have T-mobile unlocked my phone I go with unlocked firmware.
Sent from my SM-G781U1 using Tapatalk
In just got the T-Mo variant this morning. I went ahead and did a data transfer with Switch to maintain setup, from an A71 5G. Then converted the locked TMo from G781USQU1ATL2 to: G781U1UES1ATL3 (unlocked)
Will this wipe your data?
kettir said:
Will this wipe your data?
Click to expand...
Click to collapse
Not if you use Home CSC. Regular CSC will.
I tried your method it didn't work for me. Also tried to remove the OEM lock without any luck.
Do you have any suggestions? note that i'm living outside USA.
rmdan90 said:
I tried your method it didn't work for me. Also tried to remove the OEM lock without any luck.
Do you have any suggestions? note that i'm living outside USA.
Click to expand...
Click to collapse
i just managed to do it and im downloading the android 11 update RN
but no OEM unloking sadly
im also outside the USA too btw