General G996U and G996U1 Firmware Links and Flashing Discussion Here - Samsung Galaxy S21+

For those who aren't already aware, G996U is the model number of all of the US carrier versions of the S21+. The G996U1 is the model number of the same device, but sold by Samsung SIM unlocked and with no carrier bloatware. Firmware is 100% interchangeable among these models: any U or U1 firmware version can be flashed to any U or U1 device at any time, assuming that you're not trying to downgrade the bootloader. A "U to U" or "U1 to U1" flash does not require a factory reset, but changing from one firmware to the other will require one. Also, U firmware is identical for the 4 base files (AP, BL, CP, CSC) for each individual build, no matter which carrier it comes from. So if you download 2 different carrier versions of the exact same build, the 4 base files will be identical. Where the firmware differs is in the USERDATA file - that's where the carrier bloatware and customizations reside.
Manual Odin flashing is designed for those who:
- want to manually update to a newer version of U firmware on their U device, either because they don't want to wait for their carrier's OTA or because OTAs aren't working on their device, or a different carrier got a new feature/patch before they did
- want to flash U1 firmware to their U device
- want to convert from U1 firmware to carrier U firmware
- want to convert from one carrier's U firmware (with all apps and bloatware) to a different carrier's U firmware (with all apps and bloatware)
For those who aren't already aware, anyone can now download firmware for almost any Samsung device any time that they want, via the various firmware download tools posted here on XDA like SamFirm or Frija. There are threads and info about them here on XDA so I won't waste time explaining - do a search if you're not already familiar with these tools. But they only provide whatever the latest/newest/current version is - nothing older. I pay for a subscription to a site that gets the official releases (usually) before they hit the firmware download tools, so that's where my files come from.
This is not a "beginner's guide to Odin flashing" -type post/thread, so I won't list basic, step-by-step flashing instructions. My threads are geared towards those who already know what they're doing. If you're new to manually flashing Samsung firmware (or haven't done it in a long time), I recommend you consult one of those "beginner's" guides- there are tons of them here on XDA.
Happy flashing!
U firmware: https://www.androidfilehost.com/?w=files&flid=322091
U1 firmware: https://www.androidfilehost.com/?w=files&flid=322092
Notes:
- DON'T QUOTE THE OP WHEN YOU REPLY, kthx
- I have lots of threads just like this one for other Samsung flagships, if it interests you. For those who have already made use of my previous threads for a different device and are upgrading to an S21, welcome back
- My zips are compressed extra small for space and bandwidth savings. The default Windows extractor can't handle it, so you'll need a 3rd party tool like 7zip, WinRAR, etc
- it's quite time consuming to download the files, zip them up, and upload them to AFH. And, I do threads like this for every single Sx and Note x model, so I won't be uploading every single version. The only full builds that I upload are ones where I get access to a new bootloader and/or Android version early, before they hit the firmware download tools.
- My naming method for folders on AFH is: build - bootloader - Android version
So "SAT - 1 - 9.0" means the full build number ends in SAT, it's bootloader version 1, and it's Android 9.0. When bootloader and Android versions increment, the first build to have those changes will have its folder notated appropriately.
- HOME CSC file keeps data intact; using the other CSC will wipe data. Flashing USERDATA will also wipe data.
- Since AT&T doesn't allow their firmware to be publicly available (for any of their devices), I'll try to always upload at least one USERDATA per bootloader increment for AT&T (and Cricket, if they get this model). I'll also upload any full builds if AT&T is the only carrier to get that specific build, because you won't be able to find the files anywhere else.
- For identifying USERDATAS, and to know what region/CSC to use in the firmware download tools if you're downloading yourself:
AIO = Cricket (not available via firmware download tools)
ATT = AT&T (not available via firmware download tools)
BST = Boost Mobile
CCT = Xfinity Mobile (Comcast)
CHA = Spectrum Mobile (Charter)
DSH = Dish Network
SPR = Sprint
TMB = T-Mobile
TMK = Metro PCS
USC = US Cellular
VZW = Verizon (available via firmware download tools, but Manual Entry is required - Auto will not work)
XAA = U1 firmware
- the correct procedure for switching from one carrier's firmware to another is:
1. Flash full U1 firmware package including non HOME CSC
2. Upon boot, insert a SIM of the carrier whose firmware you want
3. Watch for the popup that says "reboot to apply new carrier settings" etc, and do it
4. After that restart completes, reboot back to Download mode and flash the full U firmware package, with the USERDATA file of the carrier whose firmware you want

Initial U firmware and AT&T USERDATA are posted, along with U1 firmware. U firmware is not yet accessible in the firmware download tools like SamFirm and Frija, but if anyone wants a different carrier's USERDATA (for flashing bloatware to a U1 device or for converting a U device from one carrier's bloatware to a different one), let me know and I'll get it for you

Are the firmware in OP compatible for the S21 (Non-plus)?

craznazn said:
Are the firmware in OP compatible for the S21 (Non-plus)?
Click to expand...
Click to collapse
This thread is in the S21+ forum, not the S21 forum.
This thread is for model numbers G996U and G996U1, not G991U or G991U1.
If you're looking for S21 firmware, that will be found in the S21 forum

I agree with you

Does the firmware control the SIM lock? So, can you flash the U1-XAA firmware and use say a phone purchased from AT&T on another carrier? Or do you need to do the SIM unlock before flashing?

3BeersKen said:
Does the firmware control the SIM lock? So, can you flash the U1-XAA firmware and use say a phone purchased from AT&T on another carrier? Or do you need to do the SIM unlock before flashing?
Click to expand...
Click to collapse
SIM unlock always goes much deeper than firmware. Flashing U1 will never automatically unlock any model - the unlock has to be done separately. If desired, I can provide a recommendation for a professional 3rd party business to do the unlocking, for any interested users who may not meet the carrier's unlock requirement(s).

Thanks. That's what I figured, but wanted to make sure. I like to get off of the AT&T firmware as quickly as possible as you can't get their updates unless you have an active SIM in the phone.

3BeersKen said:
You can't get their updates unless you have an active SIM in the phone.
Click to expand...
Click to collapse
Correct. They're A-holes like that haha

iBowToAndroid said:
Correct. They're A-holes like that haha
Click to expand...
Click to collapse
I got TMobile s21+ and want flash to u1,do you know which odin should I use, thanks

yijinsa said:
I got TMobile s21+ and want flash to u1,do you know which odin should I use, thanks
Click to expand...
Click to collapse
3.14.1 patched

I don't have my S21+ yet but it will be here soon. I ordered from Samsung and selected the Verizon version as unlocked was considerably more expensive.
Does anyone know what Verizon specific bloatware the S21+ has?
Are there certain apps which can be uninstalled with the U1 version but not the Verizon U version?
Are there any potential speed benefits on the 5G network that would be lost using the U1 version, or features like tethering that won't work?
For updates in the future, would they arrive faster on the U1 version, slower, or the same?
My main purpose in flashing from U to U1 is to free up the maximum amount of space of the 128 GB while still retaining 100% of the speed and features I would have with the Verizon version.
Thank you for educating me! It's been a couple years since I flashed my Note 8.

I order a unlocked S21+ U1 version straight from Samsung and didn't have to put in any VZW info.
There is a buttload of Samsung bloatware but no VZW except fot MyVZX

Have anyone here with T-mobile version stuck on TMB/TMB/TMB after going to U1 firmware?
Someone over S21 Ultra have this problem, but I'm not sure if Android 11 tinker or T-mobile side. Used to be XAA/XAA/TMB

x1tymez said:
Have anyone here with T-mobile version stuck on TMB/TMB/TMB after going to U1 firmware?
Someone over S21 Ultra have this problem, but I'm not sure if Android 11 tinker or T-mobile side. Used to be XAA/XAA/TMB
Click to expand...
Click to collapse
Yes, that seems to be a common issue with T-Mobile S21s - all 3 models

iBowToAndroid said:
Yes, that seems to be a common issue with T-Mobile S21s - all 3 models
Click to expand...
Click to collapse
You think there will be a fix for this? It's weird that dialer codes also don't work.

x1tymez said:
Have anyone here with T-mobile version stuck on TMB/TMB/TMB after going to U1 firmware?
Someone over S21 Ultra have this problem, but I'm not sure if Android 11 tinker or T-mobile side. Used to be XAA/XAA/TMB
Click to expand...
Click to collapse
I've got a T-Mobile locked that I was able to get flashed over to U1 without much trouble. Shows mode number SM-G996U1 now, build number shows same.
edit: Nevermind, I see the TMB/TMB/TMB

krisology said:
You think there will be a fix for this? It's weird that dialer codes also don't work.
Click to expand...
Click to collapse
Dialer codes don't work? On which firmware?

iBowToAndroid said:
Dialer codes don't work? On which firmware?
Click to expand...
Click to collapse
XAA U1, VZW U1, stock TMB U, and I've tried the TLI U1 above and couldn't get it to work. Using google dialer, I input the codes like *#*#27262826#*#* and as soon as I type the last star it just disappears and nothing pops up. I tried with T-Mobile and Verizon sim.

krisology said:
XAA U1, VZW U1, stock TMB U, and I've tried the TLI U1 above and couldn't get it to work. Using google dialer, I input the codes like *#*#27262826#*#* and as soon as I type the last star it just disappears and nothing pops up. I tried with T-Mobile and Verizon sim.
Click to expand...
Click to collapse
Dialer codes usually don't work on VZW firmware, whether U or U1. But they almost always work on TMB and all others.
Have you tried *#06# ?

Related

G970U and G970U1 Firmware Links Here

For those who don't know, G970U is the model number of all of the US carrier versions of the Galaxy S10e. The G970U1 is the model number of the same device, but sold by Samsung SIM unlocked and with no carrier bloatware. Firmware is 100% interchangeable among these models: any U or U1 firmware version can be flashed to any U or U1 device at any time, assuming that you're not trying to downgrade the bootloader. Also, U firmware is identical for the 4 base files (AP, BL, CP, CSC) for each individual build, no matter which carrier it comes from. So if you download 2 different carrier versions of the exact same build, the 4 base files will be identical. Where the firmware differs is in the USERDATA file - that's where the carrier bloatware and customizations reside.
Manual Odin flashing is designed for those who:
- want to manually update to a newer version of U firmware on their U device, either because they don't want to wait for their carrier's OTA or because OTAs aren't working on their device, or a different carrier got a new feature/patch before they did
- want to flash U1 firmware to their U device
- want to convert from U1 firmware to carrier U firmware
- want to convert from one carrier's U firmware (with all apps and bloatware) to a different carrier's U firmware (with all apps and bloatware)
For those who aren't already aware, anyone can now download firmware for almost any Samsung device any time that they want, via SamFirm or Frija. There are threads and info about them here on XDA so I won't waste time explaining - do a search if you're not already familiar with these tools. But they only provide whatever the latest/newest/current version is - nothing older. I pay for a subscription to a site that gets the official releases (usually) before they hit SamFirm/Frija, so that's where my files come from. However, I don't have unlimited bandwidth on the site, and it's also quite time consuming to download the files, zip them up, and upload them to AFH. And, I do threads like this for every single Sx and Note x model - so I won't be uploading every single version. The only full builds that I upload are ones where I get access to a new bootloader and/or Android version early, before they hit SamFirm/Frija.
This is not a "beginner's guide to Odin flashing" -type post/thread, so I won't list basic, step-by-step flashing instructions. My threads are geared towards those who already know what they're doing. If you're new to manually flashing Samsung firmware, I recommend you consult one of those "beginner's" guides- there are tons of them here on XDA.
Happy flashing!
U firmware: https://www.androidfilehost.com/?w=files&flid=290639
U1 firmware: https://www.androidfilehost.com/?w=files&flid=290640
(Quebec tends to be the fastest download mirror, if it gives you that option)
Notes:
- I compress extra small for space and bandwith savings. The default Windows extractor can't handle it, so you'll need a 3rd party tool like 7zip, WinRAR, etc
- I remove the .md5 from each file solely for faster flashing (Odin won't check the file integrity without it). Rest assured, the files are perfectly fine and safe - Odin has a million safechecks built in.
- My naming method for folders is: build - bootloader - Android version.
So "SAT - 1 - 9.0" means the full build number ends in SAT, it's bootloader version 1, and it's Android 9.0. When bootloader and Android versions increment, the first build to have those changes will have its folder notated appropriately.
- HOME CSC file keeps data intact; using the other CSC will wipe data. Any zips with "wipe" in the title do not have a HOME CSC included.
NOTE: With initial release, HOME CSC was not included by default, so I created it myself. Should flash fine, but until noted by someone in the thread, it has not been tested.
- I have identical threads for the S10 and S10+ as well
- Since AT&T doesn't allow their firmware to be publicly available (for any of their devices), I'll try to always upload at least one USERDATA per bootloader increment for AT&T (and Cricket, if they get this model). I'll also upload any full builds if AT&T is the only carrier to get that specific build, because you won't be able to find the files anywhere else.
- For identifying USERDATAS, and to know what region/CSC to use in SamFirm/Frija:
AIO = Cricket (not available via SamFirm/Frija)
ATT = AT&T (not available via SamFirm/Frija)
BST = Boost Mobile
CCT = Xfinity Mobile (Comcast)
CHA = Spectrum Mobile (Charter)
SPR = Sprint
TMB = T-Mobile
TMK = Metro PCS
USC = US Cellular
VZW = Verizon (available via SamFirm/Frija, but Manual Entry is required - Auto will not work)
XAA = U1 firmware
- the correct procedure for switching from one carrier's firmware to another is:
1. Flash full U1 firmware package including non HOME CSC
2. Upon boot, insert a SIM of the carrier whose firmware you want
3. Watch for the popup that says "reboot to apply new carrier settings" etc, and do it
4. After that restart completes, reboot back to Download mode and flash the full U firmware package, with the USERDATA file of the carrier whose firmware you want
Just a quick question will you be hosting FW for models G973U, G973U1, G975U, G975U1? Don't know if XDA will have separate forums for the s10e and s10+ models. Supposedly there will be a 5G S10+ coming during Mid 2019 which would have a separate FW section I assume.
equake said:
Just a quick question will you be hosting FW for models G973U, G973U1, G975U, G975U1? Don't know if XDA will have separate forums for the s10e and s10+ models. Supposedly there will be a 5G S10+ coming during Mid 2019 which would have a separate FW section I assume.
Click to expand...
Click to collapse
Read the OP
Nice plan! Kudos
Build SBA added.
SPR is the only USERDATA for this build so far - not sure if it will stay a Sprint-exclusive release, or be more widely pushed out. But like with any other build, it can be flashed to any S10e, regardless of which carrier it originally came from.
EDIT: Xfinity and Verizon USERDATAs added
I have the tmobile variant. Trying to flash and keeps failing for some reason. Trying to flash the U1 . Came with G970USQU1ASAT
matteosaeed said:
I have the tmobile variant. Trying to flash and keeps failing for some reason. Trying to flash the U1 . Came with G970USQU1ASAT
Click to expand...
Click to collapse
Can we get more details on that?
iBowToAndroid said:
MODS: Please move appropriately if the S10e is ever given its own forum
(For those who don't know, G970U is the model number of all of the US carrier versions of the Galaxy S10e. The G970U1 is the model number of the same device, but sold by Samsung SIM unlocked and with no carrier bloatware. Firmware is 100% interchangeable among any of those models.)
As of the moment of posting, these cannot yet be obtained from SamFirm, and are not yet on SamMobile, but I thought some of you might like to get early access
I have no idea if existing patched Odin can be used to flash them, since I don't have a device to try it on. Maybe one of the blog sites can give it a try for us, on one of their review units. But at minimum, devs can peek into the partitions if they want, or casual users can keep the files on hand for converting firmware, once they get their device.
The large files will be your 4 part firmware and then grab your desired USERDATA as well. I'll continue to add more versions and more USERDATAs over time.
Happy flashing!
U firmware: https://www.androidfilehost.com/?w=files&flid=290639
U1 firmware: https://www.androidfilehost.com/?w=files&flid=290640
Notes:
- I compress extra small for space and bandwith savings. The default Windows extractor can't handle it, so you'll need a 3rd party tool like 7zip, WinRAR, etc
- I remove the .md5 from each file solely for faster flashing (Odin won't check the file integrity without it). Rest assured, the files are perfectly fine and safe - Odin has a million safechecks built in.
- My naming method for folders is: build - bootloader - Android version.
So "SAT - 1 - 9.0" means the full build number ends in SAT, it's bootloader version 1, and it's Android 9.0. When bootloader and Android versions increment, the first build to have those changes will have its folder notated appropriately.
- HOME CSC file keeps data intact; using the other CSC will wipe data. Any zips with "wipe" in the title do not have a HOME CSC included.
NOTE: With initial release, HOME CSC was not included by default, so I created it myself. Should flash fine, but until noted by someone in the thread, it has not been tested.
- SamFirm still works, if you want to download them yourself. I pay for a subscription to a site that gets beta builds and also gets the official releases before they hit SamFirm, so that's where my files come from
NOTE: As of the moment of posting, these are not available via SamFirm. I'll remove this note once they become available for download (probably at/after device launch)
- I have identical threads for the S10 and S10+ as well
- You can get USERDATAs from SamFirm for everything but AT&T - those files will never be on SamFirm. So in addition to the 5 piece firmware, I'll try to always upload one USERDATA per bootloader increment for AT&T
- For USERDATAS (all the others are self explanatory):
ACG = C-Spire
AIO = Cricket
LRA = Bluegrass Cellular
CCT = Xfinity Mobile (Comcast)
CHA - Spectrum Mobile (Charter)
TMK = Metro PCS
Click to expand...
Click to collapse
Hope u can get the att.. i want the video call and advanced messaging that is missing from u1
iBowToAndroid said:
Can we get more details on that?
Click to expand...
Click to collapse
What would you like to know? I didn't get error codes or anything. Just failed. I used the csc and not the home one though.
blkghost22 said:
Hope u can get the att.. i want the video call and advanced messaging that is missing from u1
Click to expand...
Click to collapse
1. Don't quote the OP
2. What do you mean by "get the att"? There is an AT&T USERDATA for the U firmware
matteosaeed said:
What would you like to know? I didn't get error codes or anything. Just failed. I used the csc and not the home one though.
Click to expand...
Click to collapse
There might not be "codes" per se, but there's always a specific error that either shows up in Odin, or on the phone itself
iBowToAndroid said:
1. Don't quote the OP
2. What do you mean by "get the att"? There is an AT&T USERDATA for the U firmware
There might not be "codes" per se, but there's always a specific error that either shows up in Odin, or on the phone itself
Click to expand...
Click to collapse
Yeah, I remember on earlier phones there were errors showing. I didn't see anything except failed only on Odin. I'll try again later. I tried both the patched by raymond and regular Odin.
matteosaeed said:
Yeah, I remember on earlier phones there were errors showing. I didn't see anything except failed only on Odin. I'll try again later. I tried both the patched by raymond and regular Odin.
Click to expand...
Click to collapse
The only Odin that might work is the 3.13 patched (3B). But as stated in the OP, I have no idea if that Odin will work, or if a new one is needed.
If Odin fails, then we need to know on which step it fails, and what the message is. Probably best to just post a picture of it, or paste the log
Just to be clear, nobody has been able to flash U1 firmware to a U s10 device?
Considering ordering an s10e, but hoped that I could flash the U1 firmware to pass the provisioning check for tethering.
@iBowToAndroid
By any chance is there an AT&T userdata for the new SBA firmware? Sorry to bother
Nvm i just didnt check userdata and it worked
iBowToAndroid said:
The only Odin that might work is the 3.13 patched (3B). But as stated in the OP, I have no idea if that Odin will work, or if a new one is needed.
If Odin fails, then we need to know on which step it fails, and what the message is. Probably best to just post a picture of it, or paste the log
Click to expand...
Click to collapse
After i updated t-mobile firmware, i was able to flash with home csc. Stuck in starting android but will do a factory reset and will work fine. Will report back.
freddie813 said:
Just to be clear, nobody has been able to flash U1 firmware to a U s10 device?
Considering ordering an s10e, but hoped that I could flash the U1 firmware to pass the provisioning check for tethering.
Click to expand...
Click to collapse
Should work. I usually use pdanet vs the native tethering because tmobile can detect native tethering and throttle (happened on my pixel) .
---------- Post added at 11:59 PM ---------- Previous post was at 11:46 PM ----------
Flash successfully and working now. Will test if anything is broken
So all 4 main files are the same and there is no difference in T-Mobile's modem file versus ATT's? If I grab USERDATA file for TMB, it will flash all T-Mobile's bloatware.
As I remember flashing S7, S8 with a firmware that had TMB wording, where I could distinguish the firmware files. I mainly flashed 4 files on aforementioned models and skipped USERDATA and my unlocked U1 model became TMO and had all the features.
Soon T-Mobile is releasing firmware updates, will see how different they are.
So ive flashed the U1 firmware and it takes but the user data refuses to take and my phone is stil saying vzw/vzw/vzw
---------- Post added at 12:05 PM ---------- Previous post was at 12:05 PM ----------
Thinking im going to need a pulled pit file from someone actual tmobile s10e
---------- Post added at 12:06 PM ---------- Previous post was at 12:05 PM ----------
if i use the regular U firmware with tmobile it goes back to factory of verizon and logo comes back
matteosaeed said:
After i updated t-mobile firmware, i was able to flash with home csc. Stuck in starting android but will do a factory reset and will work fine. Will report back.
---------- Post added at 11:59 PM ---------- Previous post was at 11:46 PM ----------
[/COLOR]Flash successfully and working now. Will test if anything is broken
Click to expand...
Click to collapse
Could you clarify the exact actions you took, step by step? And which odin?
Here's the procedure that worked best on the S9s, to convert firmware on a U model:
1. Wipe in recovery -->reboot bootloader-->flash U1 firmware
2. Upon boot, watch for the popup that says "your device will restart to apply new carrier settings", and do it. Make sure your desired SIM is inserted for this step.
3. After that finishes, power off, boot to download, and flash desired U firmware with non HOME CSC and desired U USERDATA. That should give you all the desired carrier settings - and bloatware.
Also, G973U and G973U1 firmware is now live and downloadable in SamFirm. Getting U1 (at least for now) requires manual entry - Auto will not work. U firmware is up for these carriers:
Xfinity Mobile
Spectrum Mobile
Sprint
T-Mobile
Metro
US Cellular
Verizon (have to use Manual entry - Auto will not work)
So going forward, I'll only be adding full builds if I can get them before they hit SamFirm, and only if there isn't build for that month already (eg. I won't add any more February builds since SBA is already up.). I will try to stay up to date on USERDATAs for AT&T and Cricket, since AT&T won't let their firmware be put on SamFirm.
I have an G975U1 and I attempted to flash the U1 firmware using 3.13 out of curiosity.
The first time it failed.
When the device steps through the necessary steps for Verified Boot, it failed.
VBMETA was referenced as was the partition table. So I can only surmise that the new VBMETA.IMG information doesn't match that which is stored within the device's partition tables.
I, unfortunately, didn't capture the the log nor the screenshot.
When I put the device back into 'Download Mode' and tried again, it passed.
I am going to try a CSC change from G975U1 to G975W using Odin 3.13B but I doubt it will work.
.....
And my attempt to change G975U1 to G975W using the Bell combination files failed. It provided the same error messages regarding VBMETA. See attached logs and screenshot.

Convert N20 Ultra from VZW to T-MO

Hello, I have an unlocked Galaxy Note 20 Ultra from Verizon. I am wondering if it is possible to fully convert this device to work fully with TMobile I was specifically wondering if it's possible to use TMobiles 5G Network on this device. I have flashed the U1 Firmware to the device but it never showed me an Option to choose my carrier or anything like that, and even though the Signal shows 5G whenever I turn a speed test or view the cell info it pops up as LTE
You need to change your device CSC to TMB and flash TMB U firmware, not U1.
You device currently shows VZW/VZW/VZW in your screenshot.
It should read TMB/TMB/TMB, or at least VZW/VZW/TMB.
The SIM card itself will determine what network you have access to.
Be careful though as you have now flashed newer firmware with the new version 2 bootloader.
So you can only use firmware with that bootloader version. No going back.
rjohnstone said:
You need to change your device CSC to TMB and flash TMB U firmware, not U1.
You device currently shows VZW/VZW/VZW in your screenshot.
It should read TMB/TMB/TMB, or at least VZW/VZW/TMB.
The SIM card itself will determine what network you have access to.
Be careful though as you have now flashed newer firmware with the new version 2 bootloader.
So you can only use firmware with that bootloader version. No going back.
Click to expand...
Click to collapse
If you change ur CSC from VZW to TMB, then it will read TMB/TMB/VZW in your screenshot.
You can only change to TMB/TMB/TMB if you root your phone .
For more details, visit https://forum.xda-developers.com/t/...bands-and-services-5g-low-band-on-u1.4182293/
Please note, some codes in original post don't work for some, with latest 10.1 Update.
Using Sammobile, I've seen U1 firmware with a T-Mobile CSC. That way you won't have all the T-Mobile apps or boot screen.

(HELP)SM-N986U1 change CSC to TMB - Enable ESIm

Hey Everyone,
I have unlocked SM-N986U1 with the latest update installed (Updated with latest June update). I wanted to change my CSC to TMB (T-Mobile) so as to enable ESeim support. I tried using Samkey, wasted 1 credit too. It said CSC updated but nothing happened, my carrier still shows XAA.
Can anyone please guide me on how can I change CSC to TMB?
Thanks.
dawinner said:
Hey Everyone,
I have unlocked SM-N986U1 with the latest update installed (Updated with latest June update). I wanted to change my CSC to TMB (T-Mobile) so as to enable ESeim support. I tried using Samkey, wasted 1 credit too. It said CSC updated but nothing happened, my carrier still shows XAA.
Can anyone please guide me on how can I change CSC to TMB?
Thanks.
Click to expand...
Click to collapse
These links'could help. I think you have to flash the TMB Rom which enables and support the eSim on the phone. It would help to have a Tmobile Sim around during this process but I have heard others say it is not needed.
Note 20 Ultra eSIM update is here!! (T-mobile USA)
Guys, FINALLY!!! Woohoo! We have eSIM support on Note 20 Ultra US Snapdragon version for T-mobile. There is an OTA you can download and then convert your physical SIM to eSIM :)
forum.xda-developers.com
[Guide] - eSim Firmware Flash/ Odin Upgrade/ Flashing and N986U to N986U1 & Vice Versa
Instructions are updated to get eSIM INTRODUCTION - Firstly sorry for posting this as this is common knowledge for many. I still see so many people asking the same questions again and again and i do want to help so decided to write a guide. If...
forum.xda-developers.com
Mbetu said:
These links'could help. I think you have to flash the TMB Rom which enables and support the eSim on the phone. It would help to have a Tmobile Sim around during this process but I have heard others say it is not needed.
Note 20 Ultra eSIM update is here!! (T-mobile USA)
Guys, FINALLY!!! Woohoo! We have eSIM support on Note 20 Ultra US Snapdragon version for T-mobile. There is an OTA you can download and then convert your physical SIM to eSIM :)
forum.xda-developers.com
[Guide] - eSim Firmware Flash/ Odin Upgrade/ Flashing and N986U to N986U1 & Vice Versa
Instructions are updated to get eSIM INTRODUCTION - Firstly sorry for posting this as this is common knowledge for many. I still see so many people asking the same questions again and again and i do want to help so decided to write a guide. If...
forum.xda-developers.com
Click to expand...
Click to collapse
Thanks for the link to guide. I was going through it and there is a warning on the top saying if you have Bootloader 2 you won't be able to flash U firmware on U1. I believe as I have all the latest updates I wont be be able to flash it.
Thanks for your help.
dawinner said:
Thanks for the link to guide. I was going through it and there is a warning on the top saying if you have Bootloader 2 you won't be able to flash U firmware on U1. I believe as I have all the latest updates I wont be be able to flash it.
Thanks for your help.
Click to expand...
Click to collapse
Yes you can. My device is from Xfinity and I have done the switch to any Carrier I choose on bootloader 2. U1 to U and back is doable. The key is to use the modified Odin as specified in the guide.
"
2. Download Patched Odin here
3. Unpack/Unzip what you downloaded in Step 2 (Odin Compatible ROm) and put in a folder. Lets call the folder "Flash"
4. Run Odin, click on BL, Browse to the "Flash" folder, add BL file from there, Do the same for AP (click on AP, Add AP file, this will take some time), Same for CP (click on CP, Add CP file)
5. Do the same for CSC (click on CSC, Add the file with the name starting with Home_CSC). If you use Home_CSC your phone will not get formatted and data will remain Intact
USERDATA Stays empty.
6. Now connect USB cable to your laptop (Only laptop and not the phone)>> Turn off your phone >> Press volume up and volume down keep them pressed and plug in the USB type C into your phone.
7. You should be in download mode now, press volume up. In Odin you will see that phone is added.
8. Press start in Odin. Wait for it to finish and let the phone restart (it will happen On its own).
9. Done
Mbetu said:
Yes you can. My device is from Xfinity and I have done the switch to any Carrier I choose on bootloader 2. U1 to U and back is doable. The key is to use the modified Odin as specified in the guide.
"
2. Download Patched Odin here
3. Unpack/Unzip what you downloaded in Step 2 (Odin Compatible ROm) and put in a folder. Lets call the folder "Flash"
4. Run Odin, click on BL, Browse to the "Flash" folder, add BL file from there, Do the same for AP (click on AP, Add AP file, this will take some time), Same for CP (click on CP, Add CP file)
5. Do the same for CSC (click on CSC, Add the file with the name starting with Home_CSC). If you use Home_CSC your phone will not get formatted and data will remain Intact
USERDATA Stays empty.
6. Now connect USB cable to your laptop (Only laptop and not the phone)>> Turn off your phone >> Press volume up and volume down keep them pressed and plug in the USB type C into your phone.
7. You should be in download mode now, press volume up. In Odin you will see that phone is added.
8. Press start in Odin. Wait for it to finish and let the phone restart (it will happen On its own).
9. Done
Click to expand...
Click to collapse
Thanks for the steps. Couple of Quick Questions:
1) I used frija to download the firmware (I typed CSC: TMB in frija, as its the first time I am using it, is it the right way)
2) I also checked the version in frija with the CSC: XAA, the version is same. How can I make sure that I have downloaded the correct TMB firmware.
Thanks.
dawinner said:
Thanks for the steps. Couple of Quick Questions:
1) I used frija to download the firmware (I typed CSC: TMB in frija, as its the first time I am using it, is it the right way)
2) I also checked the version in frija with the CSC: XAA, the version is same. How can I make sure that I have downloaded the correct TMB firmware.
Thanks.
Click to expand...
Click to collapse
You might want to extract the files and check for differences. The Frija tool has been kind of good to me.
Mbetu said:
You might want to extract the files and check for differences. The Frija tool has been kind of good to me.
Click to expand...
Click to collapse
Thanks for all the help, one last question, and I dont know if you will know about this:
To enable ESIM (Only T-Mobile version has E-SIM), do I need to flash U version of T-Mobile of U1 version of T-Mobile will also provide me with the same ESIM functionality?
dawinner said:
Thanks for all the help, one last question, and I dont know if you will know about this:
To enable ESIM (Only T-Mobile version has E-SIM), do I need to flash U version of T-Mobile of U1 version of T-Mobile will also provide me with the same ESIM functionality?
Click to expand...
Click to collapse
I think I flashed the U version of Tmobile but it does not hurt to try both. This is what my device info says after converting my Xfiniti to Tmobile
Mbetu said:
I think I flashed the U version of Tmobile but it does not hurt to try both. This is what my device info says after converting my Xfiniti to Tmobile
Click to expand...
Click to collapse
Thanks!!!!
Mbetu said:
I think I flashed the U version of Tmobile but it does not hurt to try both. This is what my device info says after converting my Xfiniti to Tmobile
Click to expand...
Click to collapse
I flashed the complete U firmware except the USER DATA file. But my Service Provider Software version is still stuck at XAA, its not changing to TMB. Though the phone model has changed to what you have in your screenshot.
Any idea what to do?
dawinner said:
I flashed the complete U firmware except the USER DATA file. But my Service Provider Software version is still stuck at XAA, its not changing to TMB. Though the phone model has changed to what you have in your screenshot.
Any idea what to do?
Click to expand...
Click to collapse
So the Model is 986U/DS ? And is eSim enabled ?. That is the state you would want to be in. I understand the last XXX in the service provider software can't be changed. Mine didn't change and stayed CCT which is for xfinity but the as you can see, I have TMB/TMB, TMB/CCT. Esim is enabled and my Mint mobile (Tmobile) number is on it and I have a foreign physical Sim which is roaming on AT&T on the physical slot.
You might be close.
Mbetu said:
So the Model is 986U/DS ? And is eSim enabled ?. That is the state you would want to be in. I understand the last XXX in the service provider software can't be changed. Mine didn't change and stayed CCT which is for xfinity but the as you can see, I have TMB/TMB, TMB/CCT. Esim is enabled and my Mint mobile (Tmobile) number is on it and I have a foreign physical Sim which is roaming on AT&T on the physical slot.
You might be close.
Click to expand...
Click to collapse
Also picked this nugget up from another thread
"You have to flash full tmb firmware. Not xaa tmb but 986u tmb firmware. The esim is in the user data section you'll flash"
Others have suggested you have to do a factory reset or flash the actual CSC file not the Home CSC which means you will loose DATA. I was doing this on a phone I had not setup yet so didn't mind loosing DATA. I am also assuming you have a TMB sim card in the phone because I understand that is needed so the phone can connect to Tmobile and download the carrier data files that actually changes the CSC after a clean flash.
These are just some of the things I picked up from here when doing my conversion.
Mbetu said:
Also picked this nugget up from another thread
"You have to flash full tmb firmware. Not xaa tmb but 986u tmb firmware. The esim is in the user data section you'll flash"
Others have suggested you have to do a factory reset or flash the actual CSC file not the Home CSC which means you will loose DATA. I was doing this on a phone I had not setup yet so didn't mind loosing DATA. I am also assuming you have a TMB sim card in the phone because I understand that is needed so the phone can connect to Tmobile and download the carrier data files that actually changes the CSC after a clean flash.
These are just some of the things I picked up from here when doing my conversion.
Click to expand...
Click to collapse
Yup I used the TMB version only. The model Number changed to 986U/DS. In About phone, it shows me the IMEI of the Esim, but its greyed out.
The only thing I dont have is the T-Mobile Sim. I think thats whats causing the issue. I will arrange a t-Mobile sim and try it tomorrow.
Thanks for all the help.
Mbetu said:
Also picked this nugget up from another thread
"You have to flash full tmb firmware. Not xaa tmb but 986u tmb firmware. The esim is in the user data section you'll flash"
Others have suggested you have to do a factory reset or flash the actual CSC file not the Home CSC which means you will loose DATA. I was doing this on a phone I had not setup yet so didn't mind loosing DATA. I am also assuming you have a TMB sim card in the phone because I understand that is needed so the phone can connect to Tmobile and download the carrier data files that actually changes the CSC after a clean flash.
These are just some of the things I picked up from here when doing my conversion.
Click to expand...
Click to collapse
QQ: Does it has to be a T-Mobile Sim? or Mint mobile or anyother T-Mobile based MVNO should work?
dawinner said:
QQ: Does it has to be a T-Mobile Sim? or Mint mobile or anyother T-Mobile based MVNO should work?
Click to expand...
Click to collapse
Has to be a Tmobile Sim. I tried a Mint Sim it didn't work. If you are seeing the esim but greyed out, then you are close. Restart with a Tmobile Sim and you might be in business
Mbetu said:
Has to be a Tmobile Sim. I tried a Mint Sim it didn't work. If you are seeing the esim but greyed out, then you are close. Restart with a Tmobile Sim and you might be in business
Click to expand...
Click to collapse
Thanks that helps. I just have to figure a way to get a tmobile sim. I dont have it. Lol. Will try again once I get my hands on a Tmobile sim.
Thanks for the help.
dawinner said:
Thanks that helps. I just have to figure a way to get a tmobile sim. I dont have it. Lol. Will try again once I get my hands on a Tmobile sim.
Thanks for the help.
Click to expand...
Click to collapse
Anytime. FYI, dois not have to be an active TMB sim. Used ones are on ebay for about 2 bucks.
Mbetu said:
Anytime. FYI, dois not have to be an active TMB sim. Used ones are on ebay for about 2 bucks.
Click to expand...
Click to collapse
Thanks. Let me try those.
Since the OP looks like problem solved, and not wanting to waste new thread, i have similar issues, can you help?
I have an S10e I recently broke (amazon renewed w/U1 FW), so I got another S10e from amazon, renewed which appears to also be U1 FW.
Except the latest, the replacement phone, the one I have now, NOONE can hear me, like all the time!!!!!!! Dead spots everywhere! Its so annoying. Its like i have a bad Mic? Or something...
This didn't happen with my identical phone, the one I had prior to this one, using identical sim.
I'm on Mint mobile, which is a TMO MVNO and currently have XAA/XAG FW running on the new S10e, the new one w/bad Mic or FW problem
It appears I am on U1 Unlocked USA firmware on latest phone ( i may have flashed FW Odin when I got this new one-to be safe- i forgot)
ALSO: BOTH renewed S10e's I've Purchased from Amazon, when lookup the IMEI, it shows as the AT&T Model. Which i understand the U/U1 FW can be swapped, BUT, both phones were advertised as U1 Models for the Hardware, so they sold me U models but they flashed with U1 FW probably to make more money. (this may seem trivial, but Samsung specifically has stated TWICE, that I couldn't Beta Test their last to major android FW's, because my phone shows as At&t on their end, and not the truly unlocked U1 model, for which the beta tests were for. And i was told when i purchased it was fully unlocked U1 ver. The phone itself even says its 970u1 in settings etc.)
Are there ANY hardware (including frequency bands) differences between U and U1 Models???
Is it somehow possible that my CSC, or FW on my phone is affecting my phone so badly that people cant hear me like 88% of all calls? Like should i flash different FW, or reflash or use different CSC??
Is it possible that if I went with a locked TMO FW (or another) that I could possibly, maybe get better reception so folks can hear me better? Or hear me more often or more frequently?
How often do mics go bad or get dirty on these? Can a mic be cleaned?
I have been in the other Note 20 flashing thread but I am stuck. Tried so many ways but can't get the TMB csc to stick, always shows only XAA. I have TMO sim card too. Not sure if they blocked it on the newer releases of the phone
Has anyone tried Samkey to do this? Heard it only takes 1 credit but smallest amount of credits to purchase on ebay is 10 and I dont feel like investing more money into this effort

Question The current state of this device in the community

I'm not too familiar with this community or android rooting in general but I still want to see what I can do. I want to know more than just the state of rooting, is there a way to unlock the boot loader, is there a way I can remove some (if not all) of the preinstalled spyware and replace it, what can I do to better protect my privacy? I figured I'd check out this community as this is where I was lead when I wanted to root my old Kindle Fire and since this community doesn't just direct to sketchy proprietary tools like kingroot (or maybe you all do, IDK I haven't been here very long). If I could remove alot of the spyware/bloatware I wouldn't be as concerned with rooting or flashing a custom rom as those would be just nice to have if I could get the preinstalled OS to be more privacy focused. I know I can't really escape google since they're embedded right into android but what can I do about Samsung? If I can't do anything on the device I would still like to know if there is a list of domains I could block using a pi-hole. Thanks if anyone has any info, also my phone is from the T-Mobile distribution, I feel like that probably matters.
How to disable any pre-installed system app bloatware on Android without root
If you hate the bloatware or pre-installed apps on your Android smartphone, here's how to disable them even if Android doesn't normally let you.
www.xda-developers.com
LR7875 said:
How to disable any pre-installed system app bloatware on Android without root
If you hate the bloatware or pre-installed apps on your Android smartphone, here's how to disable them even if Android doesn't normally let you.
www.xda-developers.com
Click to expand...
Click to collapse
The reason I specified replace is that I already tried this and it broke nearly everything, for example:
despite the fact I have a different keyboard, all keyboards broke, I couldn't get the keyboard to show up.
The entire OS became very unstable
TheXGS said:
The reason I specified replace is that I already tried this and it broke nearly everything, for example:
despite the fact I have a different keyboard, all keyboards broke, I couldn't get the keyboard to show up.
The entire OS became very unstable
Click to expand...
Click to collapse
(Sentence removed for stopping confusion)
Without TWRP, replacing the OS will be impossible.
Maybe downgrade to a older phone that has greater custom ROM support.
LR7875 said:
Too bad, Samsung is bricking every debloated device, which is quite horrible.
Without TWRP, replacing the OS will be impossible.
Maybe downgrade to a older phone that has greater custom ROM support.
Click to expand...
Click to collapse
Wait, de bloating can get the device bricked?
I was able to fix it by just reinstalling everything from pm
TheXGS said:
Wait, de bloating can get the device bricked?
I was able to fix it by just reinstalling everything from pm
Click to expand...
Click to collapse
Not fully bricked, but it can be semibricked, i.e. not completely working as a mobile phone.
Xiaomi boot loops when certain apps are disabled, which is nasty and needs a factory reset to 'unbrick' it. Not sure about Samsung.
TheXGS said:
The reason I specified replace is that I already tried this and it broke nearly everything, for example:
despite the fact I have a different keyboard, all keyboards broke, I couldn't get the keyboard to show up.
The entire OS became very unstable
Click to expand...
Click to collapse
I think you removed things that shouldn't have been, or you didn't have the alternate app (e.g. keyboard) set as default. If you look at my post history, you can find the debloat list that I posted, which is 100% safe to remove without affecting the usage in any way whatsoever.
More aggressive debloating is possible, sure, but you risk breaking some things. You can always reinstall whatever you removed with "pm install-existing" as long as you used -k when you removed.
TheXGS said:
Wait, de bloating can get the device bricked?
I was able to fix it by just reinstalling everything from pm
Click to expand...
Click to collapse
No , unless your rooted. whatever you debloat while unrooted can be fixed doing Factory Reset
TheXGS said:
I'm not too familiar with this community or android rooting in general but I still want to see what I can do. I want to know more than just the state of rooting, is there a way to unlock the boot loader, is there a way I can remove some (if not all) of the preinstalled spyware and replace it, what can I do to better protect my privacy? I figured I'd check out this community as this is where I was lead when I wanted to root my old Kindle Fire and since this community doesn't just direct to sketchy proprietary tools like kingroot (or maybe you all do, IDK I haven't been here very long). If I could remove alot of the spyware/bloatware I wouldn't be as concerned with rooting or flashing a custom rom as those would be just nice to have if I could get the preinstalled OS to be more privacy focused. I know I can't really escape google since they're embedded right into android but what can I do about Samsung? If I can't do anything on the device I would still like to know if there is a list of domains I could block using a pi-hole. Thanks if anyone has any info, also my phone is from the T-Mobile distribution, I feel like that probably matters.
Click to expand...
Click to collapse
It can be rooted with Magisk V23.0 but you need to unlock the bootloader first.
The bootloader is unlockable up to V3 but this is a paid service.
To get rid of this bloatware i would suggest you flash an unlocked firmware.
You can always flash a SM-A326U1 XXA ROM (https://www.sammobile.com/samsung/g...M-A326U1/XAA/download/A326U1UEU3AUF2/1558540/) by using a patched version of ODIN 3.13.1 or later. I was able to do this using ODIN 3.1.4 3B
I now have a TMO SM-A326U without any preinstalled TMO bloat. The XAA rom did not install any TMO software that I noticed at a high level and seems like a plan stock A32 5G.
Just make sure the SM-A326U1 baseband is the same version or high than the installed SM-A326U. The base band number will be the 5th to last number in on the About page under baseband.
Edit * I was checking my computer and noticed I had the SM-A326U1 roms for XAA and TMK. I can’t recall if XAA gave me an issue during the flash and I needed to use TMK, but the end result is, my A32 5G has no TMO bloatware installed.
I hope this helps someone.
tavella said:
You can always flash a SM-A326U1 XXA ROM (https://www.sammobile.com/samsung/g...M-A326U1/XAA/download/A326U1UEU3AUF2/1558540/) by using a patched version of ODIN 3.13.1 or later. I was able to do this using ODIN 3.1.3 B3
I now have a TMO SM-A326U without any preinstalled TMO bloat. The XAA rom did not install any TMO software that I noticed at a high level and seems like a plan stock A32 5G.
Just make sure the SM-A326U1 baseband is the same version or high than the installed SM-A-326U. The base band number will be the 5th to last number in on the About page under baseband.
Click to expand...
Click to collapse
Ill try this out i been using the USC FW no bloatware whatsoever
tavella said:
You can always flash a SM-A326U1 XXA ROM (https://www.sammobile.com/samsung/g...M-A326U1/XAA/download/A326U1UEU3AUF2/1558540/) by using a patched version of ODIN 3.13.1 or later. I was able to do this using ODIN 3.1.4 3B
I now have a TMO SM-A326U without any preinstalled TMO bloat. The XAA rom did not install any TMO software that I noticed at a high level and seems like a plan stock A32 5G.
Just make sure the SM-A326U1 baseband is the same version or high than the installed SM-A326U. The base band number will be the 5th to last number in on the About page under baseband.
Edit * I was checking my computer and noticed I had the SM-A326U1 roms for XAA and TMK. I can’t recall if XAA gave me an issue during the flash and I needed to use TMK, but the end result is, my A32 5G has no TMO bloatware installed.
I hope this helps someone.
Click to expand...
Click to collapse
I...
Don't understand this lingo
can someone explain
tavella said:
You can always flash a SM-A326U1 XXA ROM (https://www.sammobile.com/samsung/g...M-A326U1/XAA/download/A326U1UEU3AUF2/1558540/) by using a patched version of ODIN 3.13.1 or later. I was able to do this using ODIN 3.1.4 3B
I now have a TMO SM-A326U without any preinstalled TMO bloat. The XAA rom did not install any TMO software that I noticed at a high level and seems like a plan stock A32 5G.
Just make sure the SM-A326U1 baseband is the same version or high than the installed SM-A326U. The base band number will be the 5th to last number in on the About page under baseband.
Edit * I was checking my computer and noticed I had the SM-A326U1 roms for XAA and TMK. I can’t recall if XAA gave me an issue during the flash and I needed to use TMK, but the end result is, my A32 5G has no TMO bloatware installed.
I hope this helps someone.
Click to expand...
Click to collapse
So I can flash a de-bloated version of the version of the OS?
TheXGS said:
So I can flash a de-bloated version of the version of the OS?
Click to expand...
Click to collapse
Yes i just flashed the XAA version and it gives the same bloat ( google bloatware ew ) as the USC version
TheXGS said:
So I can flash a de-bloated version of the version of the OS?
Click to expand...
Click to collapse
Example if the current version your on is A326USQU1AUCF then you can only flash the A326U1UEU1AUF2
TheXGS said:
I...
Don't understand this lingo
can someone explain
Click to expand...
Click to collapse
The XAA and TMB are what are referrred to as CSC codes. Each carrier has their own:
ACG – Nextech/C Spire
ATT – AT&T
CCT – Comcast
LRA – Bluegrass Cellular
SPR – Sprint (CDMA)
TFN – Tracfone
TMB – T-Mobile
USC – US Cellular
VMU – Virgin Mobile USA
VZW – Verizon
XAA – USA (unbranded/unlocked/default)
XAS – USA (unbranded/unlocked)
ODIN is software used to flash firmware on to Samsung devices while in Download mode. I believe you need to use a patched version of ODIN to cross flash devices. Regular ODIN will most likely error out during the flashing process.
The SM-A326U is a carrier branded device which is why you will probably not find a ROM with a CSC code of XAA for these devies.
The SM-A326U1 I believe is the carrier unlocked version of the device. Regardless of the CSC you flash, don’t expect to get SM-A326U TMB flashed with the SM-A326U1 XAA firmware to enable OEM Unlock in the Developer Settings. It hasn’t appeared for me and I wouldn’t expect it to.
Please feel free to correct any of my assumptions above. I’m an iPhone guy using this phone with my ASUS router as a failover if my ISP goes down. Just tinkering with it from time to time.
tavella said:
The XAA and TMB are what are referrred to as CSC codes. Each carrier has their own:
ACG – Nextech/C Spire
ATT – AT&T
CCT – Comcast
LRA – Bluegrass Cellular
SPR – Sprint (CDMA)
TFN – Tracfone
TMB – T-Mobile
USC – US Cellular
VMU – Virgin Mobile USA
VZW – Verizon
XAA – USA (unbranded/unlocked/default)
XAS – USA (unbranded/unlocked)
ODIN is software used to flash firmware on to Samsung devices while in Download mode. I believe you need to use a patched version of ODIN to cross flash devices. Regular ODIN will most likely error out during the flashing process.
The SM-A326U is a carrier branded device which is why you will probably not find a ROM with a CSC code of XAA for these devies.
The SM-A326U1 I believe is the carrier unlocked version of the device. Regardless of the CSC you flash, don’t expect to get SM-A326U TMB flashed with the SM-A326U1 XAA firmware to enable OEM Unlock in the Developer Settings. It hasn’t appeared for me and I wouldn’t expect it to.
Please feel free to correct any of my assumptions above. I’m an iPhone guy using this phone with my ASUS router as a failover if my ISP goes down. Just tinkering with it from time to time.
Click to expand...
Click to collapse
OEM unlock wont appear on the A326U.
The SM-A326U1 XAA & SM-A326U1 USC should be the debranded versions.
The XAA FW causes CSC to revert Whilst the USC doesnt.
Theres is NO XAS FW for this device.
tavella said:
The XAA and TMB are what are referrred to as CSC codes. Each carrier has their own:
ACG – Nextech/C Spire
ATT – AT&T
CCT – Comcast
LRA – Bluegrass Cellular
SPR – Sprint (CDMA)
TFN – Tracfone
TMB – T-Mobile
USC – US Cellular
VMU – Virgin Mobile USA
VZW – Verizon
XAA – USA (unbranded/unlocked/default)
XAS – USA (unbranded/unlocked)
ODIN is software used to flash firmware on to Samsung devices while in Download mode. I believe you need to use a patched version of ODIN to cross flash devices. Regular ODIN will most likely error out during the flashing process.
The SM-A326U is a carrier branded device which is why you will probably not find a ROM with a CSC code of XAA for these devies.
The SM-A326U1 I believe is the carrier unlocked version of the device. Regardless of the CSC you flash, don’t expect to get SM-A326U TMB flashed with the SM-A326U1 XAA firmware to enable OEM Unlock in the Developer Settings. It hasn’t appeared for me and I wouldn’t expect it to.
Please feel free to correct any of my assumptions above. I’m an iPhone guy using this phone with my ASUS router as a failover if my ISP goes down. Just tinkering with it from time to time.
Click to expand...
Click to collapse
So from my understanding:
There is a tool known as ODIN, this can be used to flash new roms
and from what I seem to know
I am most likely running a TMB version of the ROM as it was the default for my phone as it is a TMobile OEM version
So my question is now this:
How can I get a working version of ODIN
Where can I find a safe XAS rom to flash
I don't know if my phone is unlocked, if my phone is still locked to TMobile, could this mess with anything?
I am using SM-A326U not SM-A326U1, I assume the 1 version is unlocked?
TheXGS said:
So from my understanding:
There is a tool known as ODIN, this can be used to flash new roms
and from what I seem to know
I am most likely running a TMB version of the ROM as it was the default for my phone as it is a TMobile OEM version
So my question is now this:
How can I get a working version of ODIN
Where can I find a safe XAS rom to flash
I don't know if my phone is unlocked, if my phone is still locked to TMobile, could this mess with anything?
I am using SM-A326U not SM-A326U1, I assume the 1 version is unlocked?
Click to expand...
Click to collapse
ODIN is the software used to flash ROMS on to Samsung devices. You will want to look for ODIN 3.1.4 3B Patched On the forums or a search engine. The patched version of ODIN will allow you to flash ROMS with different CSC codes. It removes this restriction.
You are correct that the CSC code for your device is TMB. The CSC codes I listed above are some examples, not a complete list. There are no XAS CSC ROMs for this device that I am aware of, just as financeledger stated.
Your Samsung A32 5G is actually the SM-A326U model, but the SM-A326U1 roms also work on these phones, provided you use the patched ODIN. Only the SM-A326U1 has a XAA CSC rom which is bloat free. I have not tried the USC variant but I switched between the SM-A326U TMB and SM-326U1 XAA ROMs and back last night without any issues. You can find the ROMS at Sammobile.com SM-326U1 Roms it will be the third one in the list with the carrier name of Unknown https://www.sammobile.com/samsung/g...M-A326U1/XAA/download/A326U1UEU3AUF2/1558540/
VersionAndroid 11Changelist21672463Build dateThu, 03 Jun 2021 06:20:56 +0000Security Patch Level2021-05-01Product codeXAAPDAA326U1UEU3AUF2CSCA326U1OYM3AUF2
Doing this will not unlock the phone in any way, shape, or form. All this does is provides you with an A32 5G without any carrier bloat. The boot loader still cannot be unlocked and the sim will remain locked until you’ve met T-Mobile’s conditions for unlocking.
I’d recommend on reading up on how to use ODIN properly as you can brick your device if it is not used correctly. Feel free to reply back if you still have questions. I’m not knowledgable enough to understand what financeledger meant when they said the CSC gets reset using the XAA vs USC rom. Hopefully they can provide some additional details regarding that.
Ok
to be sure I get it right:
Here is what I shal do:
1: Download https://forum.xda-developers.com/t/patched-odin-3-13-1.3762572/
2: Download the XAA ROM for the SM-A326U
3: Flash the ROM with ODIN
4: Hope I don't brick my phone
Is this right?

How To Guide F711U and F711U1 Firmware Links and Flashing Discussion Here

(WIP, files are currently processing and uploading)
For those who aren't already aware, F711U is the model number of all of the US carrier versions of the Z Flip3. The F711U1 is the model number of the same device, but sold by Samsung SIM unlocked and with no carrier bloatware. Firmware is 100% interchangeable among these models: any U or U1 firmware version can be flashed to any U or U1 device at any time, assuming that you're not trying to downgrade the bootloader. A "U to U" or "U1 to U1" flash does not require a factory reset, but changing from one firmware to the other will require one. Also, U firmware is identical for the 4 base files (AP, BL, CP, CSC) for each individual build, no matter which carrier it comes from. So if you download 2 different carrier versions of the exact same build, the 4 base files will be identical. Where the firmware differs is in the USERDATA file - that's where the carrier bloatware and customizations reside.
Manual Odin flashing is designed for those who:
- want to manually update to a newer version of U firmware on their U device, either because they don't want to wait for their carrier's OTA or because OTAs aren't working on their device, or a different carrier got a new feature/patch before they did
- want to flash U1 firmware to their U device
- want to convert from U1 firmware to carrier U firmware
- want to convert from one carrier's U firmware (with all apps and bloatware) to a different carrier's U firmware (with all apps and bloatware)
For those who aren't already aware, anyone can now download firmware for almost any Samsung device any time that they want, via the various firmware download tools posted here on XDA like SamFirm or Frija. There are threads and info about them here on XDA so I won't waste time explaining - do a search if you're not already familiar with these tools. But they only provide whatever the latest/newest/current version is - nothing older. I have access to an internal Samsung firmware download tool that usually gets new versions before they hit the public firmware download tools, so that's where my files come from.
This is not a "beginner's guide to Odin flashing" -type post/thread, so I won't list basic, step-by-step flashing instructions. My threads are geared towards those who already know what they're doing. If you're new to manually flashing Samsung firmware (or haven't done it in a long time), I recommend you consult one of those "beginner's" guides- there are tons of them here on XDA.
Happy flashing!
U firmware: https://www.androidfilehost.com/?w=files&flid=327752
U1 firmware: https://www.androidfilehost.com/?w=files&flid=327753
Notes:
- DON'T QUOTE THE OP WHEN YOU REPLY, kthx
- I have lots of threads just like this one for other Samsung flagships, if it interests you. For those who have already made use of my previous threads for a different device and are upgrading, welcome back
- My zips are compressed extra small for space and bandwidth savings. The default Windows extractor can't handle it, so you'll need a 3rd party tool like 7zip, WinRAR, etc
- it's quite time consuming to download the files, zip them up, and upload them to AFH. And, I do threads like this for every single flagship model, so I won't be uploading every single version. The only full builds that I upload are ones where I get access to a new bootloader and/or Android version early, before they hit the firmware download tools.
- My naming method for folders on AFH is: build - bootloader - Android version
So "SAT - 1 - 9.0" means the full build number ends in SAT, it's bootloader version 1, and it's Android 9.0. When bootloader and Android versions increment, the first build to have those changes will have its folder notated appropriately.
- HOME CSC file keeps data intact; using the other CSC will wipe data. Flashing USERDATA will also wipe data.
- Since AT&T doesn't allow their firmware to be publicly available (for any of their devices), I'll try to always upload at least one USERDATA per bootloader increment for AT&T (and Cricket, if they get this model). I'll also upload any full builds if AT&T is the only carrier to get that specific build, because you won't be able to find the files anywhere else.
- For identifying USERDATAS, and to know what region/CSC to use in the firmware download tools if you're downloading yourself:
AIO = Cricket (not available via firmware download tools)
ATT = AT&T (not available via firmware download tools)
BST = Boost Mobile
CCT = Xfinity Mobile (Comcast)
CHA = Spectrum Mobile (Charter)
DSH = Dish Network
TMB = T-Mobile
TMK = Metro PCS
USC = US Cellular
VZW = Verizon (available via firmware download tools, but Manual Entry is required - Auto will not work)
XAA = U1 firmware
Flashed a physical T-Mobile F711U to a F711U1 XAA firmware using Odin(Can't stand the bright pink boot up animations).
Flash worked perfectly. But, when I tried to test doing an update from Google settings it failed every time with "Registration Failed". I flashed the device back to the T-Mobile F711U firmware and was able to update without issue.
Not sure if you ran into this issue, but it's worth noting you might not be able to update the phone if the carriers are checking the Firmware.
Edit: Also forgot to mention, had to use the patched Odin due to the Firmware Model mismatch. Phone does work properly though.
nwb_sam said:
Flashed a physical T-Mobile F711U to a F711U1 XAA firmware using Odin(Can't stand the bright pink boot up animations).
Flash worked perfectly. But, when I tried to test doing an update from Google settings it failed every time with "Registration Failed". I flashed the device back to the T-Mobile F711U firmware and was able to update without issue.
Not sure if you ran into this issue, but it's worth noting you might not be able to update the phone if the carriers are checking the Firmware.
Edit: Also forgot to mention, had to use the patched Odin due to the Firmware Model mismatch. Phone does work properly though.
Click to expand...
Click to collapse
What do you mean by "doing an update from Google settings"?
What type of update? What "Google settings" exactly?
iBowToAndroid said:
What do you mean by "doing an update from Google settings"?
What type of update? What "Google settings" exactly?
Click to expand...
Click to collapse
From "Settings" App > "Software Update" > "Download and Install" and pressing the "Download and Installing.
I get "Connecting to server" and then immediately "Registration Failed" I've attempted over Wi-Fi and with that option toggled off.
This could also be the phone is new and T-Mobile doesn't have the F711U1 XAA firmware at their carrier level, but the registration failed annoys me. On F711U (official T-Mobile firmware) I simply get a notification that the device is up to date.
nwb_sam said:
From "Settings" App > "Software Update" > "Download and Install" and pressing the "Download and Installing.
I get "Connecting to server" and then immediately "Registration Failed" I've attempted over Wi-Fi and with that option toggled off.
This could also be the phone is new and T-Mobile doesn't have the F711U1 XAA firmware at their carrier level, but the registration failed annoys me. On F711U (official T-Mobile firmware) I simply get a notification that the device is up to date.
Click to expand...
Click to collapse
Which F711U1 version did you flash?
iBowToAndroid said:
Which F711U1 version did you flash?
Click to expand...
Click to collapse
I flashed my phone using the F711U1OYM1AUG7 (F711U1 XAA) firmware from sammobile.
I flashed it back to the T-Mobile firmware, (F711UOYN1AUGB (F711U TMB) and the issue went away.
I did flash it again to the XAA to confirm the problem this evening. Never retained data during the process. Factory reset and removed my account information (Google and Samsung) before updating the firmware each time.
I've done this on a few phones in the past. If I'm making a blunder in the process causing this then I'm truly sorry for wasting anyone's time.
Edit: Typo
nwb_sam said:
I flashed my phone using the F711U1OYM1AUG7 (F711U1 XAA) firmware from sammobile.
I flashed it back to the T-Mobile firmware, (F711UOYN1AUGB (F711U TMB) and the issue went away.
I did flash it again to the XAA to confirm the problem this evening. Never retained data during the process. Factory reset and removed my account information (Google and Samsung) before updating the firmware each time.
I've done this on a few phones in the past. If I'm making a blunder in the process causing this then I'm truly sorry for wasting anyone's time.
Edit: Typo
Click to expand...
Click to collapse
Well UG7 is the latest that's available. So yes, I would expect you to get an error.
Once an update is available, if the phone is still giving the same error, then you can worry about it
Hello, well from my understanding Xfinity is bootloader unlockable after 60days and fully played for. I am wondering if anyone is planning on making a thread for Xfinity specifically. Or want too work with me on One. Sorry too spam or thread. But if u are familiar with how rom building, and flashing was with any other recent samsung model/Xfinity/bootloader unlock. It would be highly appreciated too know your experience.
jokono421 said:
Hello, well from my understanding Xfinity is bootloader unlockable
Click to expand...
Click to collapse
Incorrect. No US models of any Samsung device have been user-unlockable for years now, dating back to the S7
iBowToAndroid said:
Incorrect. No US models of any Samsung device have been user-unlockable for years now, dating back to the S7
Click to expand...
Click to collapse
I think network unlock got mixed up with bootloader unlock. You can unlock the phones for use with another carrier after X days and completed payment.
twistedumbrella said:
I think network unlock got mixed up with bootloader unlock. You can unlock the phones for use with another carrier after X days and completed payment.
Click to expand...
Click to collapse
Probably so
Can someone locate the thom browne fimware please?
blkghost22 said:
Can someone locate the thom browne fimware please?
Click to expand...
Click to collapse
Well normally I would say that you can get it yourself from the various firmware download tools like SamFirm or Frija. But it looks like Samsung changed something over the weekend, as the current versions of the tools are failing to pull any firmware
So I can grab it for you
iBowToAndroid said:
Well normally I would say that you can get it yourself from the various firmware download tools like SamFirm or Frija. But it looks like Samsung changed something over the weekend, as the current versions of the tools are failing to pull any firmware
So I can grab it for you
Click to expand...
Click to collapse
Thank you and always the best.
blkghost22 said:
Thank you and always the best.
Click to expand...
Click to collapse
Added, UGC build
iBowToAndroid said:
Added, UGC build
Click to expand...
Click to collapse
Guess its taking time to upload? Dont see the files just yet..
Edit:
Nvm i see the files now... again thank you so much
I know long time ago it didnt work but just wanted to throw it out there... if i flash the u1 or thom browne am i able to flash the att userdata to get the advance msging and video calls?
blkghost22 said:
I know long time ago it didnt work but just wanted to throw it out there... if i flash the u1 or thom browne am i able to flash the att userdata to get the advance msging and video calls?
Click to expand...
Click to collapse
1. Thom Browne *is* U1 firmware
2. USERDATA belongs to U firmware, not U1. So I have absolutely no idea. You'll have to try it and see what happens
Have successfully flashed F711U1 to F711W. Everything working fine. Used Odin 3.14, CSC_OMC_OYV, and working on Telus with all available features working.
Please note that AFTER the flash, you will be prompted to reset the device to stock. Reason being is that it needs to install the appropriate CSC linked to the inserted SIM card.
Can anyone confirm if cross flashing different build firmwares that it will unlock the unlock bootloader option?
Currently on carrier firmware for TMobile and I'm wondering if this is possible or if the u1 firmware has the unlock bootloader option available

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