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Convert SM-G930T to SM-G930A so I can use AT&T LTE bands.

Hi All, I want to continue using my AT&T prepaid plan but I recently bought a locked T-Mobile Galaxy S7 SM-G930T (I'm going to try to unlock it - if that doesn't work this is all moot). I would like to flash AT&T firmware so I can use the AT&T LTE bands. Can I follow the instructions in the link below once I've unlocked a T-Mobile SM-G930T and turn it into a SM-G930A?
http://www.droidviews.com/nougat-firmware-on-att-galaxy-s7s7-edge-sm-g930a-g935a/
I've read the link below... but it seems to be only if you want to continue using T-Mobile service which I don't.
https://forum.xda-developers.com/tm...w-to-flash-att-nougat-to-t-mobile-s7-t3553610

Changing firmware doesn't have anything to do with what bands the hardware supports. Unlock it and throw the ATT SIM in. Only difference is carrier supported features and software (wifi calling, etc). Flashing ATT modem might improve coverage but all S7 support the same bands.

Thanks buddy for the reply. I'm used to using a custom ROM on my Android phones so this is new. Mostly CyanogenMod.
That's good to know I don't need to flash in order to get the bands but I understand I need to if I want OTA updates from at&t. It seems relatively simple that you just flash the AT&T ROM over the T-Mobile with Odin and then use some update file. It doesn't even effect Samsung pay and Knox which is great.
Stupid question: is the AT&T modem included with the AT&T rom? Also, with regards to the 2nd link in the OP what is the update file that you put on the sdcard to use in recovery - is that an OTA update because your ROM is different from your carrier?

madadhd said:
Thanks buddy for the reply. I'm used to using a custom ROM on my Android phones so this is new. Mostly CyanogenMod.
That's good to know I don't need to flash in order to get the bands but I understand I need to if I want OTA updates from at&t. It seems relatively simple that you just flash the AT&T ROM over the T-Mobile with Odin and then use some update file. It doesn't even effect Samsung pay and Knox which is great.
Stupid question: is the AT&T modem included with the AT&T rom? Also, with regards to the 2nd link in the OP what is the update file that you put on the sdcard to use in recovery - is that an OTA update because your ROM is different from your carrier?
Click to expand...
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The following is the latest G930A Android 7.0 firmware file. All you need to do is flash it with Odin's AP slot to completely convert your G930T to a G930A. No other steps or files are required: G930AUCS4BQC2_CL10280464_QB12904132_REV02_user_low_ship_MULTI_CERT_meta.tar.rar
EDIT: Corrected the linked file

muniz_ri said:
The following is the latest G930A Android 7.0 firmware file. All you need to do is flash it with Odin's AP slot to completely convert your G930T to a G930A. No other steps or files are required: G930AUCS4BQC2_CL10280464_QB12904132_REV02_user_low_ship_MULTI_CERT_meta.tar.rar
EDIT: Corrected the linked file
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i have METROPCS Phone SM-G930T1 Nougat, already unlocked since i live in mexico...is there a international rom to flash?? i wanna convert my s7 to a non carrier rom IN ADVANCE THANKS 4 YOUR HELP!

muniz_ri said:
The following is the latest G930A Android 7.0 firmware file. All you need to do is flash it with Odin's AP slot to completely convert your G930T to a G930A. No other steps or files are required: G930AUCS4BQC2_CL10280464_QB12904132_REV02_user_low_ship_MULTI_CERT_meta.tar.rar
EDIT: Corrected the linked file
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I don't get why you would do this other than to have ATT bloat over TMO bloat (IMHO TMO has less bloat than ATT). There's no technical advantage. Am I missing something?

A0425A said:
I don't get why you would do this other than to have ATT bloat over TMO bloat (IMHO TMO has less bloat than ATT). There's no technical advantage. Am I missing something?
Click to expand...
Click to collapse
The amount of bloatware is irrelevant since you can freeze all bloatware on either build. I experienced many issues on the TMo version including issues with Android Auto, Google Assistant, and Tasker. I thought these apps were buggy but all of those issues were resolved on the AT&T version. The AT&T version seems to be a better, bug-free build.

muniz_ri said:
The amount of bloatware is irrelevant since you can freeze all bloatware on either build. I experienced many issues on the TMo version including issues with Android Auto, Google Assistant, and Tasker. I thought these apps were buggy but all of those issues were resolved on the AT&T version. The AT&T version seems to be a better, bug-free build.
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Read that in a different thread you posted to after I responded. I think it's very YMMV though. But if you saw improvement then ??

Hi, did anyone ever complete this flash from SM-G930T to SM-G930A? I'd like to do this solely to try and get the wifi calling feature since my workplace has poor cell service but great wifi. I bought the T-Mobile phone, unlocked it, put the ATT sim in and everything but wifi calling works fine. I appreciate the reply!

This is much later in the year (11-8-2021) and ATT has posted the list of phone they say will work and it only shows G930A. It seems their test of working means it must have been sold by ATT. They say My G930T won't work. So Will ATT continue to use customer's unlocked phones it they were not orginally sold by ATT. They have the records. Will ATT refuse to use one of their SIMs even if the phone is Flashed to ATT logo. I do not want to throw away my G930T phone.

muniz_ri said:
The following is the latest G930A Android 7.0 firmware file. All you need to do is flash it with Odin's AP slot to completely convert your G930T to a G930A. No other steps or files are required: G930AUCS4BQC2_CL10280464_QB12904132_REV02_user_low_ship_MULTI_CERT_meta.tar.rar
EDIT: Corrected the linked file
Click to expand...
Click to collapse
Hello and thank you. You posted this information and link back in 2017 and so much has changed. Mostly ATT is now working hard to get rid of all 3G towers and firing up 5G. They said my Galaxy S7-GM930T would not work so I think they link you posted will help me convert the phone back to a GM930A or U or U1. My question is,..Has anything in your post changed since 2017 and if so could you please advise me of what I need to do. Thanks very much.

trigger1937 said:
Hello and thank you. You posted this information and link back in 2017 and so much has changed. Mostly ATT is now working hard to get rid of all 3G towers and firing up 5G. They said my Galaxy S7-GM930T would not work so I think they link you posted will help me convert the phone back to a GM930A or U or U1. My question is,..Has anything in your post changed since 2017 and if so could you please advise me of what I need to do. Thanks very much.
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They sent you a message saying the phone won't work?

[FIRMWARE] G950U1 Unlocked AT&T QK2

As of this writing (11/29/2017) this is the latest firmware for the G950U1 att unlocked S8 . I'm leaving this here for reference so people can return to it if/when they need it.
Download, extract, remove .md5 file name off the end of each file, flash.
G950U1UEU2AQK2 (This WILL update your bootloader so after this, no going to QH3 or before. Not that you'd have a reason to)
https://drive.google.com/open?id=1gvQ0kaZTwbEYe2jvuIa05pCvwkS4ddtg

joe3681 said:
As of this writing (11/29/2017) this is the latest firmware for the G950U1 att unlocked S8 . I'm leaving this here for reference so people can return to it if/when they need it.
Download, extract, remove .md5 file name off the end of each file, flash.
G950U1UEU2AQK2 (This WILL update your bootloader so after this, no going to QH3 or before. Not that you'd have a reason to)
https://drive.google.com/open?id=1gvQ0kaZTwbEYe2jvuIa05pCvwkS4ddtg
Click to expand...
Click to collapse
you donnt need to remove the .md5
you will need modded odin though.

mweinbach said:
you donnt need to remove the .md5
you will need modded odin though.
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Click to collapse
You don't need to no, but it speeds up the process. I'm just posting firmware not making a hand holding tutorial. There's enough of those around

Thanks Joe I was tired of returning all the way back to the beginning and getting all those new updates on my unlocked S8

joe3681 said:
You don't need to no, but it speeds up the process. I'm just posting firmware not making a hand holding tutorial. There's enough of those around
Click to expand...
Click to collapse
Yeah and on a Mac you do need to, or it freezes Odin completely

If I flash unbranded FW on a carrier specific device, loke tmo or att for example, would it sim unlock the phone?
If I flash tmo FW on an att s8 would it in turn allow me to use the att original device on tmo? I ask these questions because I feel like it would work for both my questions since flashing the FW flashes both boot, kernel and baseband/radio. The which is needed for signal. Just some theories but would love to know the answers.
Btw, I have a F model S8+ and was planning on buying some US branded devices so I was curious.

this.guy.lol said:
If I flash unbranded FW on a carrier specific device, loke tmo or att for example, would it sim unlock the phone?
If I flash tmo FW on an att s8 would it in turn allow me to use the att original device on tmo? I ask these questions because I feel like it would work for both my questions since flashing the FW flashes both boot, kernel and baseband/radio. The which is needed for signal. Just some theories but would love to know the answers.
Btw, I have a F model S8+ and was planning on buying some US branded devices so I was curious.
Click to expand...
Click to collapse
No, it will not unlock the phone (Note: Verizon phones are factory unlocked and remain that way after a firmware flash)
Yes, you can flash any carriers FW to a US S8 and use it with a different carrier.

So I understand, your saying if I flash att FW to a T-Mobile s8 I can use it on tmobile? If that is the case, to me that's an unlock of sorts tiny book lol. Just wanna make sure is all

Deleted

this.guy.lol said:
So I understand, your saying if I flash att FW to a T-Mobile s8 I can use it on tmobile? If that is the case, to me that's an unlock of sorts tiny book lol. Just wanna make sure is all
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You can flash att firmware and use it on TMobile but it will still be locked to TMobile. Just running att firmware.

joe3681 said:
You can flash att firmware and use it on TMobile but it will still be locked to TMobile. Just running att firmware.
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Just realized the typo.....what I meant was, if I flash ATT on a TMO variant I can use ATT while locked to tmo? I'm very unfimiar with combination fw and always opted for the UK models for alot of reasons. Sorry for the confusion of my op question. I know on the s7 and edge if you flashed the US unlocked firmware it not only removed AOL bloat but it unlocked the device. So that is why I ask.

this.guy.lol said:
Just realized the typo.....what I meant was, if I flash ATT on a TMO variant I can use ATT while locked to tmo? I'm very unfimiar with combination fw and always opted for the UK models for alot of reasons. Sorry for the confusion of my op question. I know on the s7 and edge if you flashed the US unlocked firmware it not only removed AOL bloat but it unlocked the device. So that is why I ask.
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I had a TMobile S7 edge and flashing unlocked firmware never unlocked the device. That's handled by TMobile servers so...
Flashing unlocked firmware will give you just that. The smoother, bloat free firmware from another device but not the actual sim unlock.

I bought an unlocked device and wanted wifi calling so I flashed the g950usqs1aqf7 att firmware with Odin and it worked to enable wifi calling but I'm unable to get any ota updates and I hate the bloat. Is it possible to get WiFi calling with an unlocked firmware like this one? Also what is the difference between the U and U1 firmware variants?

maquino1985 said:
I bought an unlocked device and wanted wifi calling so I flashed the g950usqs1aqf7 att firmware with Odin and it worked to enable wifi calling but I'm unable to get any ota updates and I hate the bloat. Is it possible to get WiFi calling with an unlocked firmware like this one? Also what is the difference between the U and U1 firmware variants?
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There are plenty of threads on this, but I don't think anyone was ever successful. I flashed att Oreo to my u1 and got the options, but can't get my company to change my imei back.... My personal phone sim works fine. Quit at that point since it's an Ims registration error. You can try merging the wifi calling apks, but I'm pretty sure it's baked pretty deep in the os. The Verizon guys got some of it working. You can try their threads and see if any of it applies to us.

twizt3d said:
There are plenty of threads on this, but I don't think anyone was ever successful. I flashed att Oreo to my u1 and got the options, but can't get my company to change my imei back.... My personal phone sim works fine. Quit at that point since it's an Ims registration error. You can try merging the wifi calling apks, but I'm pretty sure it's baked pretty deep in the os. The Verizon guys got some of it working. You can try their threads and see if any of it applies to us.
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Thanks. Some threads made it sound possible but inconclusive. I'll just assume it doesn't work.
BTW, can you link to the att oreo fw? And what do u flash that with Odin or comsey?

The thread right below this one entitled Oreo ota has all the details and it needs to be side loaded through adb. Not Odin. But you will need to Odin the 950u base to get off u1

twizt3d said:
The thread right below this one entitled Oreo ota has all the details and it needs to be side loaded through adb. Not Odin. But you will need to Odin the 950u base to get off u1
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Ok thanks. I need to flash anyways because I'm having terrible battery issues and just debating whether to go to a newer version of 950u or back to U1 and losing WiFi calling. In your opinion is oreo beta worth it

So just to confirm, I have read everything, but I am just a bit confused. If I flashed the unlocked firmware via modified odin on a locked AT&T S8 it will remove a lot of the carrier bloat and give my my wifi hotspot back, but remove wifi calling. Similar to when I flashed the T-Mobile firmware on my AT&T S7 and got rid of a ton of the AT&T bloatware but was able to activate my wifi hotspot but lost wifi calling. I stay locked to AT&T which is fine that is not my purpose for flashing
---------- Post added at 07:03 AM ---------- Previous post was at 07:01 AM ----------
and can you re-upload the link is dead now

The links don't work. Any chance you've still got the firmware? I've been overseas since october. I have an unlocked AT&T phone that I intend to keep using when I get back, so I want to keep it AT&T FW.

Hi.
I have a G955U Galaxy S8+ AT&T Factory Unlocked on Android 7.0
Baseband Version: G955USQU1AQD9
Android Security Patch Level - April 1, 2017
I no longer live in the US, and currently in the Philippines. Phone works great and the signal is too and all, but I cannot get OTA updates.
Can I just download the firmware file in this thread and flash straight through ODIN, or do I need to follow another guide?

Sprint S8 Active flash to T-Mobile?

So i've read that the sprint version of the S8 Active is on bootloader v5 and the T-Mobile version is bootloader v1. Is it then possible to flash the T-Mobile firmware onto the Sprint Variant ?. The device is already unlocked but i would like Wifi-calling to work for T-Mobile.
Edit 1: Found this and successfully fully flashed from Sprint to T-Mobile(everything works including Wifi Calling). Only works if you are on bootloader version 1.
https://www.youtube.com/watch?v=DEDDTcR1SiQ
I AM NOT THE CREATOR NOR DO I TAKE CREDIT FOR THIS

No apparently the bootloader version must match or be lower so in this case sprint is higher so you can't flash. I've tried and downloaded the tmobile oreo firmware; you'll just get a fail in odin

zed011 said:
No apparently the bootloader version must match or be lower so in this case sprint is higher so you can't flash. I've tried and downloaded the tmobile oreo firmware; you'll just get a fail in odin
Click to expand...
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That is the part i am maybe not understanding. My Sprint S8 active says it is Software version G892USQS1ARC1. Doesn't that mean it is bootloader version 1?

Sorry I was wrong! I actually flashed it! Very happy right now. I was being stupid and using an older version of odin before. Now I successfully flashed sprint to t-mobile oreo with no problems! Use Odin 3.13.1; not prince comsy mod or anything else. So it was bootloader 1 after all; there were some misleading posts without proof. I will trust the software number from now on

zed011 said:
Sorry I was wrong! I actually flashed it! Very happy right now. I was being stupid and using an older version of odin before. Now I successfully flashed sprint to t-mobile oreo with no problems! Use Odin 3.13.1; not prince comsy mod or anything else. So it was bootloader 1 after all; there were some misleading posts without proof. I will trust the software number from now on
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ARE YOU SERIOUS?!?! Does wifi calling work for you now?

I'm not sure. How can I check? I'm on Fido which is Canadian carrier without WiFi calling. I'm guessing I'm supposed to be looking for a tmobile WiFi calling app. See attachment screenshot for proof. Still recognizes my phone is from sprint

Yeah i just finished flashing it and i get the same as you. Phone still recognized as Sprint and no WiFi calling. Darn. Android 8.0 Oreo is a huge plus however.

zed011 said:
Sorry I was wrong! I actually flashed it! Very happy right now. I was being stupid and using an older version of odin before. Now I successfully flashed sprint to t-mobile oreo with no problems! Use Odin 3.13.1; not prince comsy mod or anything else. So it was bootloader 1 after all; there were some misleading posts without proof. I will trust the software number from now on
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Click to collapse
I think we need to follow this guide to change carrier but the thing is there is no factory binary for the s8 active so this guide won't work until there is one...
https://forum.xda-developers.com/galaxy-s8/how-to/switch-to-carrier-firmware-100-t3609487

Actually I have found and flashed a factory binary trying to change it to T-Mobile. The problem I ran into is they want you to download the firmware with "w" after the model number. That is what I think let's you change the option after typing in the code. That firmware is only for s8 I think(not active as it has the s8 model #). Without flashing that, after I typed in the code the only option I had to choose from was sprint. No "xac" or whatever it was.
If I am not mistaken. The model with the "w" is the Canadian version of the s8. The s8 active is US only I think.

So Im getting ready to pick up a Sprint version to use on Att or Tmobile (good deal). Are you guys seeing any issues after flashing? Thanks

jmill75 said:
So Im getting ready to pick up a Sprint version to use on Att or Tmobile (good deal). Are you guys seeing any issues after flashing? Thanks
Click to expand...
Click to collapse
The only thing I've notice is there is no option for mobile hotspot( i don't think it was there to begin with, i could be wrong however). Other than that it works perfectly. Great battery life and everything. Flash the userdata to get rid of the Sprint Boot animation if you'd like. I did it and now there is just the "Samsung s8 Active" logo, then lock screen. Goodluck.

Mohamed1993 said:
The only thing I've notice is there is no option for mobile hotspot( i don't think it was there to begin with, i could be wrong however). Other than that it works perfectly. Great battery life and everything. Flash the userdata to get rid of the Sprint Boot animation if you'd like. I did it and now there is just the "Samsung s8 Active" logo, then lock screen. Goodluck.
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Click to collapse
Do you have a link by chance to the files? Thanks

After flashing Sprint variant of the device to T-Mobile firmware, do all features work: WiFi Calling, Band 12, VoLTE and Band 71?

Charkatak said:
After flashing Sprint variant of the device to T-Mobile firmware, do all features work: WiFi Calling, Band 12, VoLTE and Band 71?
Click to expand...
Click to collapse
No wifi calling, no VoLTE. Not sure about the bands

Charkatak said:
After flashing Sprint variant of the device to T-Mobile firmware, do all features work: WiFi Calling, Band 12, VoLTE and Band 71?
Click to expand...
Click to collapse
WiFi calling works fine on T-Mobile without flashing to T-Mobile firmware. Only issue is that sometimes it gets stuck enabling WiFi calling requiring a reboot. Band 12 also works, its in the Sprint specifications. The big question I wonder about is if band 71 can be enabled.

flash not working?
i flashed the tmobile firmware and after its all dont i boots up does an update and then boots with all the sprint stuff still

snowfirebeast said:
i flashed the tmobile firmware and after its all dont i boots up does an update and then boots with all the sprint stuff still
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Did you follow the video I posted?. Ignore all the other comments about things not working. When i updated the OP with the link, it fully flashed the sprint device to T-Mobile. The only thing you have to watch out for, is if your Sprint software is running a new bootloader. You can tell by looking at the baseband version number. This will only work if you are on bootloader 1. My baseband is currently "G892USQS1BRD5". The bootloader version is the 5th character starting from the right. The number 1 before "BRD5".

How to enable VoLTE on SM-G930F?

I was wondering if it's possible to enable VoLTE on an SM-G930F running BTU firmware on an AT&T carrier. Is there any way to get things like WiFi Calling and VoLTE on it, or am I just screwed since I'm using the international variant of the phone?
When I first got it brand new from Wal-Mart, it was running TTT firmware (from Trinidad and Tobago for some reason) and showed normal 3G, 4G, and LTE symbols on my status bar. Since I wanted to get the Nougat update early, I flashed BTU which switched the symbols to H, H+, and 4G. Does that have anything to do with it?
Thanks.

You're certain it's a G930F? And from Walmart of all places? Exynos isn't meant to be sold in the US.
If it's a G930F and you have TWRP you can flash the CSC tool in the development section which has the US carriers, and CSC is what enables VoLTE.
If it's a US snapdragon model you could flash the AT&T CSC via Odin without needing TWRP.

Beanvee7 said:
You're certain it's a G930F? And from Walmart of all places? Exynos isn't meant to be sold in the US.
If it's a G930F and you have TWRP you can flash the CSC tool in the development section which has the US carriers, and CSC is what enables VoLTE.
If it's a US snapdragon model you could flash the AT&T CSC via Odin without needing TWRP.
Click to expand...
Click to collapse
If OP successfully flashed BTU then it has to be a Exynos G930F, but I agree, most phones sold in the US claiming to be the G930F are modded Snapdragons faked to look like it, but they obviously won't allow a Exynos ROM to be flashed to them, so in this case OP has got a real Exynos
Could be the modem (CP) part of the firmware controlling which carrier services you can receive in your region, not sure I'd recommend flashing a US modem to a UK firmware though, unsure what would happen, although the G930F is pretty straight forward to unbrick as long as you can get back into download mode

Beanvee7 said:
If it's a G930F and you have TWRP you can flash the CSC tool in the development section which has the US carriers, and CSC is what enables VoLTE.
Click to expand...
Click to collapse
Where is this CSC tool? I'm not sure what you mean by "development section". I have an Oreo G930F and I'm trying to get VoLTE to work with AT&T.

Feenix0 said:
Where is this CSC tool? I'm not sure what you mean by "development section". I have an Oreo G930F and I'm trying to get VoLTE to work with AT&T.
Click to expand...
Click to collapse
It hasn't been updated with the newer versions of Android so it's not really a thing anymore.
Next best thing is to download the entire firmware package for your carrier from somewhere like updato then flash only the home_CSC file. Although iirc this might now work if mixing and matching models, which is why the CSC flash tool was a thing.

Beanvee7 said:
It hasn't been updated with the newer versions of Android so it's not really a thing anymore.
Next best thing is to download the entire firmware package for your carrier from somewhere like updato then flash only the home_CSC file. Although iirc this might now work if mixing and matching models, which is why the CSC flash tool was a thing.
Click to expand...
Click to collapse
The trouble is that the G930F was never officially released on US markets, so I can't find a US firmware. I'd gladly use another market's firmware if I knew it would support AT&T VoLTE and "LTE only" mode, but I have no idea how to figure that out!

So it turns out that I have the Canadian SM-G930W8 (as shown on the download mode screen), not the G930F (as shown everywhere else). Identical hardware, but I can only flash Canadian firmware.

G930W8 on T-mobile, and did I get lucky?

I just bought a used S7. I was told it was the Sprint version, but when I checked it it turned out to be a Rogers 930W8 with an Exynos 8890 which is a little faster than the S820 in my other phone.
Did I actually get lucky with this version or would the Sprint be better?
I would like to have it fully functional on Tmobile including all bands such as LTE band 12 and VoLTE and Wifi calling.
With Sprint the plan was to flash the stock Tmobile firmware.
Is that still an option with with the Exynox?
Do I even need full firmware and would flashing just CSC files to get me VoLTE and wifi calling.
Also, is the bootloader unlocked on all Exynos phones, and if so, is there an even better option than Tmobile firmware to give me everything I want?
Thanks

Flashing T-Mobile firmware won't be possible because it's developed the snapdragon SoC specifically, you'd brick the phone trying to flash it onto exynos, assuming Odin would even let you flash it at all.
Same goes for the CSC, you will need it for VoLTE and VoWIFI but you'd brick it trying to flash via Odin. Your best bet would probably be flashing TWRP and flashing the CSC zip if it's still being updated.