[How-To] Flash AT&T Nougat to T-Mobile S7

[r3xx3r]

Hey everyone,

Here is a guide to flash AT&T Nougat to our T-Mobile S7. For convenience I have uploaded everything needed to google drive.
So far the only thing I have found that isn't working is Wi-Fi Calling.

1) Download everything from this Google Drive folder:
https://drive.google.com/drive/folders/0B6HE3dipVfjZOVRMcWd1S3IzOVE?usp=sharing

2) Copy the "update.zip" to your SD card. If you don't have an SD Card, you may need to copy it to your phone after step (4)

3) Put your phone into Download mode

4) Flash the PK1 files in Odin (AP, CSC, BL, and CP)

5) Once your phone restarts to the setup screen (could take 10-15 minutes) restart back into Recovery mode. No need to do any setup here

6) Flash update from SD Card and select "update.zip". This step can take over 30 minutes.

7) Once you have gone through the initial setup, you need to fix the APN settings.
a) Go to Settings - Connections - Mobile Network - Access Point Names
b) Click Add
c) Fill in these APN Settings
Name: T-Mobile US LTE
APN - fast.t-mobile.com
MMSC: http://mms.msg.eng.t-mobile.com/mms/wapenc
APN type: default,mms,supl
d) Click the 3dots menu - Save
e) Click on the newly created menu
f) Now your LTE data should work

And Voila! You now have a working final version of Nougat. You can disable almost everything that AT&T puts on there.


EDIT: I've updated the Google Drive link with a compressed file containing all the needed AT&T files.

If this works for you please go to the following post and thank the OP. Without his instructions, I would have not been able to do this.
https://forum.xda-developers.com/at...to-update-galaxy-s7-edge-firmware-to-t3541296

 

[Illyakulinych]

Are there any connection drops: Bluetooth, Wi-Fi, or cellular drop? Is the signal good where it is supposed to be good?

 

[r3xx3r]

Are there any connection drops: Bluetooth, Wi-Fi, or cellular drop? Is the signal good where it is supposed to be good?

No, I haven't had any connection drops. I only flashed it last night, I will definitely keep everyone here updated. Cell signal is just as good as the latest tmobile features.

Also, I realized I posted this in the Q&A section. Any chance an admin could move it to the Guide section

 

[popmpopm]

plz compress it and upload again impossible to download

 

[r3xx3r]

plz compress it and upload again impossible to download

Sorry about that. Reuploading now. The same link should work and it will be ready in about 20 minutes. I'll edit this post when it is uploaded.

 

[Owi93]

Is there any difference between verizon nougat and at&t nougat ?
I mean i am using verizon nougat on my s7 tmobile but I experience issues with cellular network alot.
Could someone guide me please?

 

[r3xx3r]

Is there any difference between verizon nougat and at&t nougat ?
I mean i am using verizon nougat on my s7 tmobile but I experience issues with cellular network alot.
Could someone guide me please?

The main differences I found between the Version nougat I was using and this version is that the latest Verizon version I could find was still just a beta. This is what seems to be a fully finished version of nougat. As I said, I have only had this for 1 day on my phone, but so far I have had absolutely no issues. The Verizon version gave me battery life issues, it caused my phone to overheat quite often, this version has none of those problems.

 

[Owi93]

The main differences I found between the Version nougat I was using and this version is that the latest Verizon version I could find was still just a beta. This is what seems to be a fully finished version of nougat. As I said, I have only had this for 1 day on my phone, but so far I have had absolutely no issues. The Verizon version gave me battery life issues, it caused my phone to overheat quite often, this version has none of those problems.

I see.
So No mobile data issues you mean ?

 

[r3xx3r]

I see.
So No mobile data issues you mean ?

exactly. I have not had any mobile data issues yet. Battery life so far is amazing. Performance is awesome.

 

[Owi93]

exactly. I have not had any mobile data issues yet. Battery life so far is amazing. Performance is awesome.

Thanks for the help man.
I will try this today.
Will I have to go back to the tmobile stock firmware first ? To flash the at&t firmware?

 

[r3xx3r]

Thanks for the help man.
I will try this today.
Will I have to go back to the tmobile stock firmware first ? To flash the at&t firmware?

I was on stock t-mobile firmware, but I don't see why you would need to be too flash this.

 

[popmpopm]

thanks for y hard work
Are the French language in this rom

 

[Owi93]

I was on sick tmobile firmware, but I don't see why you would need to be too flash this.

I don't know bro.
I am new to this game.
I just don't want something bad to happen

 

[r3xx3r]

thanks for y hard work
Are the French language in this rom

Yes they are

 

[r3xx3r]

I don't know bro.
I am new to this game.
I just don't want something bad to happen

Than flash back to stock firmware.

 

[popmpopm]

I was on sick tmobile firmware, but I don't see why you would need to be too flash this.

if you know 930U MM rom are great too ( yes 930t is really very bad rom ) am uncertain to change it

 

[tonyec7]

can someone confirm that VoLTE works?

 

[DXander1337]

Just flashed this. So far so good. Will reply later tomorrow to let people know if I find anything not working

 

[dandel0074]

Quick question the, the files I downloaded is a pk1 is that that actual Update file? Or is that the odin files to flash threw odin? Then the update file should be there to do a recovery flash Update?

I'm already on pk1 but the mobile and it didn't flash threw recovery. I thought I'd just have to flash it over this but not being on att started to figure that I need to be on att pk1.

Thanks in advance

 

[r3xx3r]

Quick question the, the files I downloaded is a pk1 is that that actual Update file? Or is that the odin files to flash threw odin? Then the update file should be there to do a recovery flash Update?

I'm already on pk1 but the mobile and it didn't flash threw recovery. I thought I'd just have to flash it over this but not being on att started to figure that I need to be on att pk1.

Thanks in advance

Okay, so there are 5 files in the archive. 4 of them end in .tar.md5 and those are the AT&T PK1. You need to flash those files through Odin, than flash the update.zip through the phones recovery mode. You need to be on the AT&T PK1 before you can flash the update.zip through the recovery. Flashing the update.zip while on the T-Mobile PK1 will fail.