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AT&T Note 8 on T-Mobile

Upgraded to Note 9, want to pass my Note 8 on to a T-Mobile user. I want a complete T-Mobile experience, so all T-Mobile bloat and settings are needed (VoLTE, Hotspot, etc...) . Note 8 currently has latest CRID OTA from ATT. Looking for help in determining the correct way to proceed. I am having AT&T carrier unlock the device, so I would make this change after confirmed unlock. Also, once this is finished, will the device receive T-Mobile OTA updates?
I have read through https://forum.xda-developers.com/galaxy-note-8/how-to/guide-sm-n950u-u1-t3685884 but am confused. I see lots of mention of combination files, CSC changing, etc... that seem overkill for what i'm looking for.
Are these the steps I need to take?
1) Download latest Odin compatible TMB Firmware (which is what version?)
2) Download Odin on PC
3) Factory reset Note 8
4) Flash TMB firmware
5) Insert TMB SIM card
6) Success?

Yes just download this file
https://www.sammobile.com/firmwares/galaxy-note8/SM-N950U/TMB/download/N950USQU5CRIA/237765/
Flash everything with Odin and you will have a full 100% T-Mobile Note8 with all carrier features working
Sent from my SM-N950U1 using Tapatalk

Vish.N said:
Yes just download this file
https://www.sammobile.com/firmwares/galaxy-note8/SM-N950U/TMB/download/N950USQU5CRIA/237765/
Flash everything with Odin and you will have a full 100% T-Mobile Note8 with all carrier features working
Sent from my SM-N950U1 using Tapatalk
Click to expand...
Click to collapse
I saw here that simply flashing a different carrier firmware will not actually change carriers?? Is that correct?
https://forum.xda-developers.com/showpost.php?p=74087669&postcount=3
Someone in that thread said I would need to flash an unlocked U1 firmware and then the TMB firmware?

I am about to do this as well, switching from AT&T to T Mobile using my AT&T branded Note 8. I just wanted to confirm that it's as simple as downloading the latest Android Pie firmware for T Mobile and flash it to the AT&T branded phone? Any precaution like some other thread mentioned to flash the U1 (unlocked) firmware first then flash the T Mobile firmware?
Also, eventually, I will be giving this Note 8 to someone in China. At that point, is it better to flash the unlocked version of firmware or just leave the T Mobile firmware on it?
Thanks so much for your help.
Note: the phone is already unlocked.

I just wanted to let everyone know that I went and got T Mobile. After the new SIM card was inserted in my AT&T Note 8, after a reboot, it did something, a screen with a SIM car graphics and some moving dot. Then it rebooted itself again, and then T Mobile splash screen showed up. It even added the bloatware from T Mobile. So, Android 9 for Note 8 probably has both ROMs? I also checked the firmware version. It shows the latest T Mobile ROM.
I didn't have to do anything other than just inserting the new SIM card from T Mobile.
This is very interesting to me, and the store guy couldn't believe his eyes either.

de2000 said:
I just wanted to let everyone know that I went and got T Mobile. After the new SIM card was inserted in my AT&T Note 8, after a reboot, it did something, a screen with a SIM car graphics and some moving dot. Then it rebooted itself again, and then T Mobile splash screen showed up. It even added the bloatware from T Mobile. So, Android 9 for Note 8 probably has both ROMs? I also checked the firmware version. It shows the latest T Mobile ROM.
I didn't have to do anything other than just inserting the new SIM card from T Mobile.
This is very interesting to me, and the store guy couldn't believe his eyes either.
Click to expand...
Click to collapse
And i was wondering why my phone still showing at&t bloatware even after installing the Verizon firmware. ? Now i understand Cuz I'm using at&t sim. Good to know?

Another update!
I just got updated by T-Mobile to the latest firmware after converting over as previously stated. I have to say that the update page on the phone for the T-Mobile firmware is MUCH nicer and informative than the ATT version. It tells you how much time left, the version numbers, and even a "what's new" section...
After this update, my phone is actually better at battery usage.

OTA

Can anyone tell me if there is newer software for this phone on AT&T?
Currently:
Model LM-G900UM
SW VERSION G900UM10e
Security June 1, 2020
I'm reading there is a version G out, but I'm not getting an update. I even tried a new SIM.

I have the Canadian version, same model and no we haven't had a software update here either
From my knowledge the only ones that have gotten an update are the international unlocked versions which are running the Snapdragon 845

At&t has had two security updates and they're not getting to me. No one at at&t seems to know what to do.

So, this saga has finally ended. My firmware was G900UM10e. VPN bug, and phone would not take OTA. It kept saying I had the latest firmware. To their credit, AT&T support DID try everything. The phone wouldn't even take a push from their servers. New SIM card, factory reset, nada.
So, they sent a warranty replacement with G900UM10n loaded. VPN works perfect. I NEED it for work. And, today I managed to get G900UM10o over the air.
Either the IMEI of my old phone was MAJORLY hard bricked on their update server, or there was a bug in 10e blocking OTA.
Anyhoo, just wanted to share.

mrsubway said:
So, this saga has finally ended. My firmware was G900UM10e. VPN bug, and phone would not take OTA. It kept saying I had the latest firmware. To their credit, AT&T support DID try everything. The phone wouldn't even take a push from their servers. New SIM card, factory reset, nada.
So, they sent a warranty replacement with G900UM10n loaded. VPN works perfect. I NEED it for work. And, today I managed to get G900UM10o over the air.
Either the IMEI of my old phone was MAJORLY hard bricked on their update server, or there was a bug in 10e blocking OTA.
Anyhoo, just wanted to share.
Click to expand...
Click to collapse
I haven't tried the VPN, but I would like to update to Android 11, and I am still stuck with the June 1, 2020 security patch on android 10 with the software version of G900UM10e and my model number is LM-G900UM. I got mine from the USA but am currently living in South Africa, so is there any way that I can fix this issue?

Only if you have an AT&T Sim card. You can't do an OTA update unless it's on the AT&T network.
e is the variant I got stuck on. Since I got my warranty replacement, I've gotten numerous updates, including Android 11.

mrsubway said:
Only if you have an AT&T Sim card. You can't do an OTA update unless it's on the AT&T network.
e is the variant I got stuck on. Since I got my warranty replacement, I've gotten numerous updates, including Android 11.
Click to expand...
Click to collapse
So basically, I can't ever receive updates unless I get an AT&T SIM card and are on their wireless network?

scorpawe said:
So basically, I can't ever receive updates unless I get an AT&T SIM card and are on their wireless network?
Click to expand...
Click to collapse
Correct.

Well, that sucks. Do you know of any way to bypass it, or is there a custom ROM that I can install on this variant of the LG Velvet?

Flash S10+ to get latest security patches

Hi there, new member with a first question.
I bought an S10+ (SM-G975U) online, unlocked, to be used mainly with AT&T when in US, and different carriers when traveling. IMEA check shows the phone was originally on Verizon carrier, but works fine with AT&T sim card. However, it's not receiving OTA software updates, and the security patches are way behind. When I try to force software updates, says it's already up to date. Seems like on unlocked phones, or switched carriers the updates don't happen. I tried booting the phone with a working Verizon sim card, still no updates. Online searches say that flashing the firmware is my best (or only) option. I downloaded Odin, but I still have a lot to learn and don't want to brick my phone. I'm not sure which firmware version to get. AT&T vs Verizon? U or U1 since it's unlocked? Do I flash all 5 files or just some of them?
Thanks.

A small Update Issue on the Note 10+ 5G Verizon Help?

Hello everyone, this is my first post here.
I have a slight problem. I have an unlocked verizon Note 10+ 5G SM-976V and I changed CSC to GCF a while back because the verizon CSC had bloatware.
Now i have GCF/GCF/VZW. Im stuck on March 1 2020 security patch. The phone works great and everything is working well. I want to upgrade to android 11. That is somewhat not possible because when i try to upgrade from my phone it says, 'Your current software version isnt supported. Visit a service center.'
What firmware is for me? How can i get an firmware that can fix my usual updates? Or if i have upgrade firmware on odin, what version should i be choosing?
I do not live in the US anymore, phone was unlocked on verizon. All sims seem to be working on it. Attaching the files necessary for your study. Please help?

chingy00 said:
Hello everyone, this is my first post here.
I have a slight problem. I have an unlocked verizon Note 10+ 5G SM-976V and I changed CSC to GCF a while back because the verizon CSC had bloatware.
Now i have GCF/GCF/VZW. Im stuck on March 1 2020 security patch. The phone works great and everything is working well. I want to upgrade to android 11. That is somewhat not possible because when i try to upgrade from my phone it says, 'Your current software version isnt supported. Visit a service center.'
What firmware is for me? How can i get an firmware that can fix my usual updates? Or if i have upgrade firmware on odin, what version should i be choosing?
I do not live in the US anymore, phone was unlocked on verizon. All sims seem to be working on it. Attaching the files necessary for your study. Please help?
Click to expand...
Click to collapse
Have a look here for official ota updates from Verizon: https://www.verizon.com/support/samsung-galaxy-note-10-plus-5g-update/
If it does not work and you have an unlocked bootloader, you can flash latest stock firmware with Odin on pc.

Stuck on Android 9 and One UI 1.0

Greetings,
I am a new user here. I just bought Galaxy S10e and I really like the phone, but the problem is that I ordered it from USA (I live in the Republic of Georgia). Originally the phone was from AT&T, but the seller had it unlocked for any GSM carriers and it works fine with my Georgian sim card. The only problem is that I do not receive any software updates. It is stuck on Android 9 and One UI 1.0. When I try to check for updates, it says that my software is up to date. The same happens with Smart Switch.
I tried Frija and Odin. My CSC is G970UOYN1ASD9 and PDA is G970USQS1ASD9. There is no way to download firmware for my own country's CSC, because there is no firmware for SM-G970U (Snapdragon chipset), in Georgia they only sell Exynos ones officially. So, I tried to find updates with CSC ATT in Frija and it does not give me anything. I tried XAA and XAS (which is for unlocked phones) and still nothing. I tried TMK (I think it is for MetroPCS) and USC (This one is for US Cellular) and also TMB (T-Mobile) and they do have Android 11 firmware. But now I am afraid I will break something if I install above mentioned firmware to my device. Or maybe I will not break anything by changing the CSC, but maybe there is also a chance that if I install the above mentioned ones, the phone will get locked on these carriers and I won't be able to use my sim card. Is logical, or am I just overthinking it?
Any help would be really appreciated.
Thanks in advance.

don't flash your nations CSC- that shouldn't matter. Snapdragons LTE bands should be good enough to work internationally
go and reflash a USC or XAA rom with patched ODIN... I had to do this for my phone and OTA started working once it was on the correct CSC
you could even flash it to the latest firmware if you wanted too.

supertac said:
don't flash your nations CSC- that shouldn't matter. Snapdragons LTE bands should be good enough to work internationally
go and reflash a USC or XAA rom with patched ODIN... I had to do this for my phone and OTA started working once it was on the correct CSC
you could even flash it to the latest firmware if you wanted too.
Click to expand...
Click to collapse
Thank you for your answer.
What do you mean by correct CSC? I believe, my phone is on correct CSC now. I have already pasted it and in about phone > Software information > Service Provider it says ATT/ATT/ATT. But it seems that ATT doesn't receive updates outside US.
I cannot seem to find firmware for XAA/XAS, there is one for USC but I have already downloaded TMK. Is there any difference if I install USC or TMK? (TMK is MetroPCS).

GSamkh said:
Thank you for your answer.
What do you mean by correct CSC? I believe, my phone is on correct CSC now. I have already pasted it and in about phone > Software information > Service Provider it says ATT/ATT/ATT. But it seems that ATT doesn't receive updates outside US.
I cannot seem to find firmware for XAA/XAS, there is one for USC but I have already downloaded TMK. Is there any difference if I install USC or TMK? (TMK is MetroPCS).
Click to expand...
Click to collapse
Hi GSamkh... Did you upgraded to 11? Im trying to do the oposite, downgrade from Android 11 to 9. If you didnt the upgrade, can you check if the secure startup (or secure boot) its avaliable? Since in Android 10 and 11 isnt...
Seams that secure startup works on Galaxy S9 with Android 10 upgraded from 9.

dvaguirre said:
Hi GSamkh... Did you upgraded to 11? Im trying to do the oposite, downgrade from Android 11 to 9. If you didnt the upgrade, can you check if the secure startup (or secure boot) its avaliable? Since in Android 10 and 11 isnt...
Seams that secure startup works on Galaxy S9 with Android 10 upgraded from 9.
Click to expand...
Click to collapse
Greetings,
I have already updated to Android 11 using U1 XAA firmware and it works great. I used Frija and then Odin if anyone wants do to do this. Weird thing happened though - when I flashed the firmware and when Odin did it's job, the laptop suddenly shut down and I couldn't turn it back on. I had to disassemble it and unplug the integrated battery, plug it back on and fortunately it turned on again.
As far as your question goes, I am sorry but I cannot check it since I am already on Android 11.

Hi
GSamkh said:
Greetings,
I have already updated to Android 11 using U1 XAA firmware and it works great. I used Frija and then Odin if anyone wants do to do this. Weird thing happened though - when I flashed the firmware and when Odin did it's job, the laptop suddenly shut down and I couldn't turn it back on. I had to disassemble it and unplug the integrated battery, plug it back on and fortunately it turned on again.
As far as your question goes, I am sorry but I cannot check it since I am already on Android 11.
Click to expand...
Click to collapse
Hi GSamkh,
I am experiencing the same issue as you, purchased an AT&T branded SM-G970U for use in Australia. After you flashed to Android 11 using U1 XAA firmware, do you now receive OTA updates? cheers