Odin Files/Guides For S21

[mustang7757]

So far these are the files for US unlocked versions
https://forum.xda-developers.com/t/samsung-s21-s21-and-s21-ultra-u1-firmware-links.4220223/

 

[X1tymez]

Thanks. I managed to have my carrier unlocked my phone. Time for flash .

 

[mustang7757]

Thanks. I managed to have my carrier unlocked my phone. Time for flash .

Sweet!! enjoy
I would do the same, Your Welcome!

 

[X1tymez]

Just checking back. It seen Unlocked firmware does supported T-mobile 5G NSA and SA without any hiccup. I was worry its only exist in T-Mobile firmware. Carrier aggregation is there, but you won't notice.

USCC roaming worked for me. Found loop hole T-Mobile .

 

[X1tymez]

Have you ever encounter this before. After flashed to U1 firmware. Service provider software version still show TMB/TMB/TMB. Shouldn't it display XAA/XAA/TMB?

 

[mustang7757]

Have you ever encounter this before. After flashed to U1 firmware. Service provider software version still show TMB/TMB/TMB. Shouldn't it display XAA/XAA/TMB?

Hmm I thought it would say TMB/XAA/TMB
it's been awhile since I flashed from carrier to unlock , but it might be right, the model name is changed under settings>about phone?

 

[X1tymez]

Hmm I thought it would say TMB/XAA/TMB
it's been awhile since I flashed from carrier to unlock , but it might be right, the modrel name is changed under settings>about phone?

SM-G996U1. It throw me off to see it like that. . I'll see if this push any OTA.

 

[cohoman]

Can anyone tell me what's the latest update on the S21 AT&T version? Does anyone have the firmware newer than G991USQU1ATLF ?

Thanks.

 

[mustang7757]

Can anyone tell me what's the latest update on the S21 AT&T version? Does anyone have the firmware newer than G991USQU1ATLF ?

Thanks.

Att firmware are very hard to come by

 

[mustang7757]

SM-G996U1. It throw me off to see it like that. . I'll see if this push any OTA.

You should be ok.

 

[cohoman]

Att firmware are very hard to come by

I understand, but I wanted to see if anyone got a newer update and what that update is. I've noticed that sometimes the ATT firmware number doesn't exactly match the TMB, USC, or Verizon versions.

 

[mustang7757]

I understand, but I wanted to see if anyone got a newer update and what that update is. I've noticed that sometimes the ATT firmware number doesn't exactly match the TMB, USC, or Verizon versions.

If it was me personally, I would flash monthly to Tmobile or Verizon firmware or even any other carriers firmware whoever has the update first. Yes the they can have different build between carriers but your sim will load what's on it and only negative thing about it is u don't get OTA instead have to flash. I like the unlock firmware as no carriers splash screen or apps and little bit cleaner and all carriers on same build regardless

 

[cohoman]

If it was me personally, I would flash monthly to Tmobile or Verizon firmware or even any other carriers firmware whoever has the update first. Yes the they can have different build between carriers but your sim will load what's on it and only negative thing about it is u don't get OTA instead have to flash. I like the unlock firmware as no carriers splash screen or apps and little bit cleaner and all carriers on same build regardless

So, installing a non-AT&T firmware will not cause issues with my phone connecting to AT&T's 5G network?

 

[mustang7757]

So, installing a non-AT&T firmware will not cause issues with my phone connecting to AT&T's 5G network?

Not at all , all carriers firmware are interchangeable.

 

[X1tymez]

You should be ok.

Getting back. I just February update.

 

[mustang7757]

Getting back. I just February update.

Just seen , sweet

 

[CarlGHarris]

Thanks. I managed to have my carrier unlocked my phone. Time for flash .

How'd you get your carrier to unlock your phone?

 

[mustang7757]

How'd you get your carrier to unlock your phone?

If you meet the requirements, usually device paid off and account in good standing then call your carrier and ask to unlock it

 

[X1tymez]

How'd you get your carrier to unlock your phone?

I just paid the phone off. Don't buy that 40 days usage crap.

 

[cohoman]

During the pre-ordering I had the option of buying my S21 from Samsung for $250 (using the trade-in offer) or getting the S21 for free from AT&T but with the requirement that I needed to keep the phone on an active line for 30 months. I decided to pay the $250 and order from Samsung but still get the AT&T carrier version of the S21. Since the phone is fully paid off, I was able to request and receive the unlocking codes from the AT&T web site. So now, I have a fully unlocked S21.