Obtaining ATT Specific Functions On An Unlocked Phone - Samsung Galaxy S10+ Questions & Answers

Hey Everybody,
So I've come to realize that my unlocked US S10+ on AT&T didn't have VOLTE or Wifi calling as options in the communication/call settings menus. this is pretty disappointing as it seems that using the unlocked phone with Verizon you get these features, and they make a decent impact on my use of the phone.
My understanding is if I flash the ATT firmware to the phone I would get the functions, so being an amateur I followed some simple guides to SamFirm AND ODIN, and downloaded the ATT CSC firmware for my model number. However after going through the Odin process and resetting my phone it is still showing the same Software information as prior to my installation, and I do not have the features.
I saw a thread on the board stating that the ATT firmware isn't available yet, so I'm not sure if what I downloaded was actually any different than what is on my phone,and my phones "Service Provider Software Version" did already have ATT in the description, which is a bit confusing to me.
Am I correct in understanding the only way to get the features would be through a firmware flash? And would anyone know if I had flashed the right firmware, and what the original firmware CSC would be for my model if I needed to revert?
My information is:
Model Number:
SM-G975U1 (S10+ ceramic white 512GB - Unlocked US)
Service Provider SW ver.:
SOAMC_SM-G975U1_OYM_ATT_PP_0018
R38M205LY2B
ATT/ATT/XAA
Firmware file obtained from SamFirm:
SM-G975U1_1_20190225093814_9wyh9qbuyg_fac
AP file name for reference:
AP_G975U1UEU1ASBA_CL15445662_QB22243196_REV00_user_low_ship_MULTI_CERT_meta_OS9.tar

If it's anything like the S9 was, you can't just ODIN the firmware/CSC. You'll just get the bloat with none of the features you want.

Goronok said:
If it's anything like the S9 was, you can't just ODIN the firmware/CSC. You'll just get the bloat with none of the features you want.
Click to expand...
Click to collapse
I've heard this as well. If you want those features on a Samsung phone, it has to be at&t branded. I ordered an at&t phone from Samsung since I make good use of wifi calling. It works fine on my unlocked P3XL but no dice on the Samsungs.

I have the same phone and service and when I went to update my imei they told me it could not find the phone. So I was without lte/4g for a day until I gave them a imei to a s8 active. Now I have data at least
Darthshadow666 said:
Hey Everybody,
So I've come to realize that my unlocked US S10+ on AT&T didn't have VOLTE or Wifi calling as options in the communication/call settings menus. this is pretty disappointing as it seems that using the unlocked phone with Verizon you get these features, and they make a decent impact on my use of the phone.
My understanding is if I flash the ATT firmware to the phone I would get the functions, so being an amateur I followed some simple guides to SamFirm AND ODIN, and downloaded the ATT CSC firmware for my model number. However after going through the Odin process and resetting my phone it is still showing the same Software information as prior to my installation, and I do not have the features.
I saw a thread on the board stating that the ATT firmware isn't available yet, so I'm not sure if what I downloaded was actually any different than what is on my phone,and my phones "Service Provider Software Version" did already have ATT in the description, which is a bit confusing to me.
Am I correct in understanding the only way to get the features would be through a firmware flash? And would anyone know if I had flashed the right firmware, and what the original firmware CSC would be for my model if I needed to revert?
My information is:
Model Number:
SM-G975U1 (S10+ ceramic white 512GB - Unlocked US)
Service Provider SW ver.:
SOAMC_SM-G975U1_OYM_ATT_PP_0018
R38M205LY2B
ATT/ATT/XAA
Firmware file obtained from SamFirm:
SM-G975U1_1_20190225093814_9wyh9qbuyg_fac
AP file name for reference:
AP_G975U1UEU1ASBA_CL15445662_QB22243196_REV00_user_low_ship_MULTI_CERT_meta_OS9.tar
Click to expand...
Click to collapse

Service Provider SW ver.:
SOAMC_SM-G975U1_OYM_ATT_PP_0018
R38M205LY2B
ATT/ATT/XAA
So I have the same service provider software, on my unlocked s10+, however when I went into an ATT store and looked at a branded S10+
I noticed the service provider software version to be : SOAMC_SM-G975U1_OYM_ATT_PP_0033( thirty three at end),
so anyway to update the service provider version? does that come from the SIM ??

I have an unlocked S10 plus and I flashed the AT&T Firmware. I now have VoLTE and WiFi calling unlocked on my phone using AT&T. You need to make sure you flash the U version of the firmware, not the U1 one. Unlocked S10 is using the U1 firmware already so flashing that one again changes nothing.

beethoven1854 said:
I have an unlocked S10 plus and I flashed the AT&T Firmware. I now have VoLTE and WiFi calling unlocked on my phone using AT&T. You need to make sure you flash the U version of the firmware, not the U1 one. Unlocked S10 is using the U1 firmware already so flashing that one again changes nothing.
Click to expand...
Click to collapse
Where did you get the att firmware?
Sent from my SM-G975U using Tapatalk

I kinda doubt it but did any of you with unlocked phones that flashed the AT&T firmware get any better service? I've been considering it to get VOLTE but just wondered

jamgam said:
I kinda doubt it but did any of you with unlocked phones that flashed the AT&T firmware get any better service? I've been considering it to get VOLTE but just wondered
Click to expand...
Click to collapse
I followed this thread https://forum.xda-developers.com/galaxy-s10/how-to/att-ota-ota-updates-t3909697
At first like you I downloaded the wrong version and nothing changed. I finally flashed G975USQU1ASBA and now have VOLTE/WIFI Calling and of course all of the bloat. But at least those two functions are working. Make sure that you complete a clean flash when I did a dirty flash I had problems sticking on the loading screen.

I believe you just need to call in ATT to take care those carrier specific features .

Which firmware can I flash with Odin to my S10+ Xfinity Mobile unlocked to get AT&T OTA updates? Currently have ASF7 flashed from the latest unknown firmware uploaded to Sammobile. I flashed w/o USERDATA. I just want to be able to get future OTA updates as I just switched my carrier from Metro by T-Mobile to AT&T. I was using U1 US unlocked firmwares on my Note9 & S10+ but want to use carrier perks now with AT&T.

What's with AT&T being the only ones to not release update files? You would think they all would be required to release them. More AT&T customers need kick up a fuss about it.

Related

SM-935V

I would like to know if it's possible to flash the firmware for
T-mobile I'm looking to leave verizon I know that the Verizon variant does not have 2 of the lte bands that T-mobile uses can I use Odin to Flash the 935t firmware to get the band's or am I asking something that is not possible. Thanks in advance
Rich7591110 said:
I would like to know if it's possible to flash the firmware for
T-mobile I'm looking to leave verizon I know that the Verizon variant does not have 2 of the lte bands that T-mobile uses can I use Odin to Flash the 935t firmware to get the band's or am I asking something that is not possible. Thanks in advance
Click to expand...
Click to collapse
The answer is NO you're asking firmware to replace/add hardware and that's not possible
I have a Verizon branded s7 edge and used Odin to load the 935U PI3 firmware. I am on T-Mo now and do have LTE band 12 working (validated with LTE Discovery). The research that I did found that the US variants have all the radios in them, but some carrier variants of firmware disable certain bands. By doing the 935U firmware, I also got rid of the notice on every reboot that I was using a non-Verizon SIM. So I now have all T-mo bands and no stupid SIM message.
Rich7591110 said:
I would like to know if it's possible to flash the firmware for
T-mobile I'm looking to leave verizon I know that the Verizon variant does not have 2 of the lte bands that T-mobile uses can I use Odin to Flash the 935t firmware to get the band's or am I asking something that is not possible. Thanks in advance
Click to expand...
Click to collapse
I can vouch for same experience as SF-IT guy. I bought a G935V and flashed with G935U firmware via odin. Works on T-mobile, even wifi calling works. Currently on the latest PI3 version of G935U firmware. I would that you search the forum to see if you can flash the G935T firmware directly. The only downside of using G935U firmware is that the FM radio chip is not enabled in the firmware. I read that the all the carrier versions (September security patch and newer) of the G935 firmware have the FM radio chip enabled. I prefer the 935U version because it there is not carrier bloatware. Samsung bloatware is still there.
davekung said:
I can vouch for same experience as SF-IT guy. I bought a G935V and flashed with G935U firmware via odin. Works on T-mobile, even wifi calling works. Currently on the latest PI3 version of G935U firmware. I would that you search the forum to see if you can flash the G935T firmware directly. The only downside of using G935U firmware is that the FM radio chip is not enabled in the firmware. I read that the all the carrier versions (September security patch and newer) of the G935 firmware have the FM radio chip enabled. I prefer the 935U version because it there is not carrier bloatware. Samsung bloatware is still there.
Click to expand...
Click to collapse
So what would the FM radio chip do? Just enable FM radios is all? Because if that's the downside then it's not a major setback as not too many people use the FM radio.
I don't think you can
cyoo97 said:
I don't think you can
Click to expand...
Click to collapse
You definitely can. All US versions of the S7 & S7 Edge are the same hardware and can be flashed to any other US firmware. (including the U firmware that automatically works on all 4 carriers)
andrewNY said:
You definitely can. All US versions of the S7 & S7 Edge are the same hardware and can be flashed to any other US firmware. (including the U firmware that automatically works on all 4 carriers)
Click to expand...
Click to collapse
So what you're saying is that flashing the U version firmware will unlock by default all 930"X" and 935"X" phones? As in it just unlocks the mofo and debloats some while you're at it?
What's the catch? It seems too easy
Tin_Man_0 said:
So what you're saying is that flashing the U version firmware will unlock by default all 930"X" and 935"X" phones? As in it just unlocks the mofo and debloats some while you're at it?
What's the catch?
Click to expand...
Click to collapse
Bloat is definitely gone on the U firmware, which is great. My phone runs faster and has more free space too.
I think some carrier features aren't supported on the U firmware. On T-mobile everything works (VoLTE and Wi-Fi Calling), but I think AT&T might have some issues with those.
If the phone is SIM locked to a particular carrier, I'm not sure that automatically gets turned off or not when you switch to the U firmware. You might need to contact your carrier first to get an unlock code?
andrewNY said:
Bloat is definitely gone on the U firmware, which is great. My phone runs faster and has more free space too.
I think some carrier features aren't supported on the U firmware. On T-mobile everything works (VoLTE and Wi-Fi Calling), but I think AT&T might have some issues with those.
If the phone is SIM locked to a particular carrier, I'm not sure that automatically gets turned off or not when you switch to the U firmware. You might need to contact your carrier first to get an unlock code?
Click to expand...
Click to collapse
What if I got a temporary unlock from t-mobile unlock app and then flashed this firmware? Would it make it permanent? Seems quite possible, but I don't know if the temporary unlock actually unlocks the phone or just inserts a bypass that would disappear if flashed.
andrewNY said:
Bloat is definitely gone on the U firmware, which is great. My phone runs faster and has more free space too.
I think some carrier features aren't supported on the U firmware. On T-mobile everything works (VoLTE and Wi-Fi Calling), but I think AT&T might have some issues with those.
If the phone is SIM locked to a particular carrier, I'm not sure that automatically gets turned off or not when you switch to the U firmware. You might need to contact your carrier first to get an unlock code?
Click to expand...
Click to collapse
I unlocked my US TMo phone when stock, rooted, and am running Echoe - which has a glitch where WiFi calling sort of works (can receive calls but not make them). In the TMo forum, there are threads on U - your comments here are more specific to what I am interested.
Which U firmware are you on and are you rooted (is is updated to latest v4 bootloader version), and did you have to ODIN and full wipe with CSC or did you get by with CSC Home to preserve data?
Also, are you on U CP or did you flash TMo CP to get all the bands?.
.
duplicate - XDA burped
Thanks everyone

Installing AT&T firmware on unlocked Verizon S7 Edge SM-G935V

I've purchased an unlocked Verizon S7 Edge, model SM-G935V, but haven't received it yet. I'm an AT&T customer. The phone should work on AT&T's network since it's unlocked, but I just realized it'll probably still have Verizon-ified firmware, and might not work with certain AT&T-specific features like HD voice, video calling, or voicemail. How will the Verizon firmware behave when it's on the AT&T network? Can I install the latest AT&T firmware on this phone instead, using a similar method to what people are doing for the 935U firmware? I prefer a stock AT&T firmware rather than a beta or rooting. Thanks in advance!
There's another thread in this forum "Stock Firmware for SM-935A (AT&T)". Should I just flash that to my unlocked SM-935V, and essentially turn it into a 935A? I believe the hardware of all S7 Edge models is identical, so I'm hoping that will work.
I did this and applied the 7.0 update - and now I can't seem to revert to any other software. If I were you, I'd flash the U update and forget about carrier-specific garbage.
raduque said:
I did this and applied the 7.0 update - and now I can't seem to revert to any other software. If I were you, I'd flash the U update and forget about carrier-specific garbage.
Click to expand...
Click to collapse
Thanks. Did you have any problems getting LTE data to work with your 935V once it was on the AT&T network? I saw a few mentions from people saying they could only get slower data connections, until they called AT&T to "provision LTE for their SIM" or something. I get the impression it's not enough just to have an AT&T SIM card - like the AT&T network has a registry of phone IDs, and non-AT&T branded phones won't be in it, and so won't get LTE data.
From browsing the 935U thread, it sounds like that firmware is receiving updates much more slowly than the carrier-specific firmwares. The U firmware also wouldn't provide the missing AT&T-specific features I was looking for, like HD voice or WiFi calling, so I'm not convinced it would really be an improvement over just keeping the Verizon fw. But maybe I'll feel differently once I actually get my hands on the phone and play with it - all I'm doing now is reading forum threads and checking my mailbox.
Honestly couldn't tell you. I'm on Verizon with my main device (S7e on U FW). I only flashed the AT&T FW (PK1) so I could flash the unreleased Nougat files.
Now, I can't seem to flash anything but an AT&T rom.
Also FWIW, the U firmware is getting updates slower than carrier roms, but it's still the better rom - untouched by the carrier's bumbling idiot of a dev team, no pre-loaded carrier junk you can't get rid of (only disable), better battery life and better performance.
More FWIW, I don't care about HD Voice or Wifi calling - both those are irrelevant to me.
At&t release today on 2/17/17 official update to Nougat 7.0 build BQA6 with February security.
Clicking from Edge of Galaxy.
I want to do the opposite - flash G935V onto G935A, with the intention of eventually being able to flash back G935A. Not sure if I could do this, though.
Sent from my SM-G930V using Tapatalk
I've got my phone working now. The short answer is yes, as far as I've found, you can flash any carrier's firmware to your S7 Edge. There may be some limitations if the bootloader version on your phone is different from the new firmware's bootloader version, but fortunately I didn't run into that. I went from the Verizon firmware to the AT&T firmware and then to the unbranded 935U firmware.
But for best results, a branded S7 Edge should be used with the same branded firmware, and on the same network. Otherwise you may run into some problems, or certain carrier-specific features won't work. In my case, my Verizon-branded S7 Edge is unable to get Wifi calling and HD Voice (aka VoLTE) on the AT&T network with an AT&T SIM card, no matter what firmware version I use.
s.chamberlin said:
I've got my phone working now. The short answer is yes, as far as I've found, you can flash any carrier's firmware to your S7 Edge. There may be some limitations if the bootloader version on your phone is different from the new firmware's bootloader version, but fortunately I didn't run into that. I went from the Verizon firmware to the AT&T firmware and then to the unbranded 935U firmware.
But for best results, a branded S7 Edge should be used with the same branded firmware, and on the same network. Otherwise you may run into some problems, or certain carrier-specific features won't work. In my case, my Verizon-branded S7 Edge is unable to get Wifi calling and HD Voice (aka VoLTE) on the AT&T network with an AT&T SIM card, no matter what firmware version I use.
Click to expand...
Click to collapse
Really? That's strange. I successfully flashed V firmware on my A and HD voice & WiFi Capping are active
Sent from my SM-G935V using Tapatalk
So you did the opposite direction of what I did? I've read that AT&T is more restrictive about these features than some other carriers, which is maybe why it didn't work for me. I can't find it now, but there was an AT&T community forums thread in which a rep straight-out said that those features won't work on a non-AT&T-branded phone or other unlocked "bring your own device" phone.
To be fair, I'm not certain HD Voice isn't working, since there doesn't seem be a definitive way to test for it. With the AT&T firmware, attempting to turn on wifi calling would give me an error saying it couldn't be activated on my device. With the unbranded 935U firmware and an AT&T SIM card installed, I don't even see an option for turning on wifi calling.

Want to Flash AT&T or Unlocked Firmware on T-Mobile Device - A Few Questions

So I've spent a few hours searching XDA to find the right resources on how to flash a different U.S. carrier's GS7 Edge firmware on the T-Mobile branded device. I found out that since all the internal hardware for all U.S. devices are identical, I'd be able to flash any one carrier's firmware on to any carrier's device, provided there are no inconsistencies with the bootloader versions of the firmwares.
The phone is intended for an extended family member and I am able to purchase a T-Mobile GS7 Edge for significantly cheaper than from any other carrier. Because it will be used on AT&T's network, I wanted to make sure I got everything right before I get started. I either want to flash the AT&T version which will allow it to be fully compatible on the network, or the Unlocked version. Apparently, the unlocked version is completely debloated since it's not associated with any carrier and provides better benchmarks, especially battery life, so I'm interested in that.
I've compiled the resources I need in the following:
https://forum.xda-developers.com/att-s7-edge/how-to/firmware-att-s7-edge-g935a-official-t3412312
https://forum.xda-developers.com/att-s7-edge/help/att-t-mobile-bootloader-version-t3473281
https://forum.xda-developers.com/tmobile-s7-edge/help/installed-sm-g935u-sm-g935t-firmware-t3482945
https://forum.xda-developers.com/att-s7-edge/how-to/samsung-sm-935u-firmware-install-guide-t3411451
https://forum.xda-developers.com/att-s7-edge/how-to/firmware-pi2-s7-edge-sm-g935a-10-03-16-t3477246
https://forum.xda-developers.com/verizon-s7-edge/how-to/odin-stock-nougat-firmware-t3570156
https://forum.xda-developers.com/att-s7-edge/how-to/updated-935u-935a-live-links-pi3-t3501686
http://updato.com/firmware-archive-select-model?q=SM-G935U&order=date&dir=desc&exact=1
etc.
One question I have is whether I am able to flash the Unlocked firmware at all. I don't currently have the device in hand so I can't check the baseband version, but my understanding is that the Unlocked version is currently on a lower bootloader version whereas it is v4 for AT&T or T.Mobile. This would mean I would be able unable to flash the Unlocked firmware if the device already has a higher version of the bootloader, right? Conversely, I would be able to do so if the T-Mobile bootloader was on the same version as the Unlocked version (e.g., if the device hasn't had an update to its bootloader).. The same issue would arise if I wanted to go back to a carrier firmware. Where can I find a list of T-Mobile firmwares and their bootloader versions so that I can check? Threads I've searched are saying I can't go to 935U from 935A/T because of mismatching bootloaders but others are saying I can go back to 935A/T on Nougat (same bootloader versions?) so clarification would be greatly appreciated.
Edit: Just discovered the bootloader version can be determined by looking at the 9th character in the baseband version. Pretty simple!
Another question I have is whether flashing the AT&T firmware will give me VoLTE, Wifi Calling, tethering, etc. on AT&T's network. I've established that if I flashed the Unlocked firmware, I'll lose these functions (unless I root the phone, but that's a no-go since I need Samsung Pay intact). Just wanted to make sure that I would retain these features if I flashed the AT&T firmware on the T-Mobile device. Also, would I receive all OTAs pushed from AT&T while I'm on their firmware, even though it was a T-Mobile device? Or would I have to manually update it somehow?
Many thanks in advance.
Yes you can flash the unlocked firmware, I do recommend flashing the at&t CP (radio) though for better signal.
For tmobile all we lose is video calling, we retain everything else. I can't answer your other questions since I have not used this phone from tmobile on at&t. I have used the at&t model on tmobile with U and had no issues.
Sent from my SM-G935U using XDA Premium HD app
justda said:
Yes you can flash the unlocked firmware, I do recommend flashing the at&t CP (radio) though for better signal.
For tmobile all we lose is video calling, we retain everything else. I can't answer your other questions since I have not used this phone from tmobile on at&t. I have used the at&t model on tmobile with U and had no issues.
Sent from my SM-G935U using XDA Premium HD app
Click to expand...
Click to collapse
^^^^^this man is correct. Also, is the device you want to flash Carrier unlocked? Even though youre flashing a different carriers firmware or even the U firmware I believe the IMEI still needs to be unlocked from the original carrier. Obviously just pop the at&t sim card in the t mobile phone to see if its unlocked. hope this helps.
black96ss said:
^^^^^this man is correct. Also, is the device you want to flash Carrier unlocked? Even though youre flashing a different carriers firmware or even the U firmware I believe the IMEI still needs to be unlocked from the original carrier. Obviously just pop the at&t sim card in the t mobile phone to see if its unlocked. hope this helps.
Click to expand...
Click to collapse
Yes, it'll be unlocked, so there won't be problems there. If I flash the AT&T firmware and not the Unlocked firmware, I will retain video calling, yes?
justda said:
Yes you can flash the unlocked firmware, I do recommend flashing the at&t CP (radio) though for better signal.
For tmobile all we lose is video calling, we retain everything else. I can't answer your other questions since I have not used this phone from tmobile on at&t. I have used the at&t model on tmobile with U and had no issues.
Sent from my SM-G935U using XDA Premium HD app
Click to expand...
Click to collapse
If I flash the current version of the Unlocked firmware, can I go back to AT&T's or T-Mobile's firmware?
Synchronicities said:
Yes, it'll be unlocked, so there won't be problems there. If I flash the AT&T firmware and not the Unlocked firmware, I will retain video calling, yes?
Click to expand...
Click to collapse
flashing the at&t firmware will just be like having an original at&t s7 edge so yes. The Unlocked firmware will be lighter with no video calling(no carrier apps, no carrier boot animation, some of the quick toggles will be different) you will retain VOLTE HD calling, wifi calling(if at&t has that) and with the at&t you will have all the bloat (about 2-3 GB of used storage plus more a tad bit more use on ram usage) which will use more battery. remember like stated above, if you do decide to flash the U firmware, make sure you flash the latest At&t CP being you will have better coverage since youll be on the at&t network.
Synchronicities said:
If I flash the current version of the Unlocked firmware, can I go back to AT&T's or T-Mobile's firmware?
Click to expand...
Click to collapse
I was able to flash back to T mobile from the U, I never tried anything with a At&t variant or the at&t firmware
I am also interested. If I flash
1) Will the device status remain "Unmodified" - I use Good for Enterprise for work email and it won't function on rooted or modified devices
2) Will Android Pay Work?
3) Will I get Software updates directly?
cnewsgrp said:
I am also interested. If I flash
1) Will the device status remain "Unmodified" - I use Good for Enterprise for work email and it won't function on rooted or modified devices
2) Will Android Pay Work?
3) Will I get Software updates directly?
Click to expand...
Click to collapse
Can someone review and comment?
---------- Post added at 12:24 PM ---------- Previous post was at 12:19 PM ----------
black96ss said:
flashing the at&t firmware will just be like having an original at&t s7 edge so yes. The Unlocked firmware will be lighter with no video calling(no carrier apps, no carrier boot animation, some of the quick toggles will be different) you will retain VOLTE HD calling, wifi calling(if at&t has that) and with the at&t you will have all the bloat (about 2-3 GB of used storage plus more a tad bit more use on ram usage) which will use more battery. remember like stated above, if you do decide to flash the U firmware, make sure you flash the latest At&t CP being you will have better coverage since youll be on the at&t network.
I was able to flash back to T mobile from the U, I never tried anything with a At&t variant or the at&t firmware
Click to expand...
Click to collapse
Does Android Pay work on "U" firmware?
Should I get CP from here => https://forum.xda-developers.com/att-s7-edge/how-to/firmware-att-s7-edge-g935a-official-t3412312
I this a good thread for instructions to install U firmware on T => https://forum.xda-developers.com/att-s7-edge/how-to/samsung-sm-935u-firmware-install-guide-t3411451
cnewsgrp said:
Can someone review and comment?
---------- Post added at 12:24 PM ---------- Previous post was at 12:19 PM ----------
Does Android Pay work on "U" firmware?
Should I get CP from here => https://forum.xda-developers.com/att-s7-edge/how-to/firmware-att-s7-edge-g935a-official-t3412312
I this a good thread for instructions to install U firmware on T => https://forum.xda-developers.com/att-s7-edge/how-to/samsung-sm-935u-firmware-install-guide-t3411451
Click to expand...
Click to collapse
Yes and yes
Sent from my SM-G955U1 using XDA-Developers Legacy app
cnewsgrp said:
I am also interested. If I flash
1) Will the device status remain "Unmodified" - I use Good for Enterprise for work email and it won't function on rooted or modified devices
2) Will Android Pay Work?
3) Will I get Software updates directly?
Click to expand...
Click to collapse
I Flashed an AT&T S7 Edge with T-Mobile firmware and:
1) Status remains unmodified
2) Android pay works (as well as Samsung pay)
3) I've already got 2 T-Mobile pushed firmware updates that installed without any issues.
Don't know if this helps, but I'd think it would be the same going from T-Mobile to AT&T.
I did also have to use a modified version of "ODIN" and flash a "PIT" file because T-Mobile has a different partition than AT&T.
pierre3408 said:
I Flashed an AT&T S7 Edge with T-Mobile firmware and:
1) Status remains unmodified
2) Android pay works (as well as Samsung pay)
3) I've already got 2 T-Mobile pushed firmware updates that installed without any issues.
Don't know if this helps, but I'd think it would be the same going from T-Mobile to AT&T.
I did also have to use a modified version of "ODIN" and flash a "PIT" file because T-Mobile has a different partition than AT&T.
Click to expand...
Click to collapse
Thanks! I am almost ready. Final checks
- I downloaded 935U firmware from here https://forum.xda-developers.com/tmobile-s7-edge/how-to/4-28-t-mobile-935-firmware-t3597866 (File is G935UUEU4BQD2_G935UOYM4BQD2_TMB.zip)
- I am planning to use ODIN 3.12.7
- Since I am on ATT Network I will use ATT Radio (CP File). I downloaded ATT firmware from here => https://forum.xda-developers.com/att-s7-edge/how-to/odin-files-to-s4bqc2-g935a-t3582874
I will use this CP => CP_G935AUCS4BQC2_CL10280464_QB12904088_REV02_user_low_ship_MULTI_CERT.tar
Am I doing everything right?
Should I just flash all U files (including Radio) and flash ATT Radio later?
Please advise
Hi team
I have the tmo ime version of the s7 edge, but flash the ATT firmware BQC2 and now I can not go back to tmobile firmware or the U firmware I got the following error in Odin:
Error device info
Who can help me,?I going to gift my s7 edge to my brother and he is on Tmobile network
Galaxy S7 active
I have a at&t Galaxy S7 active unlocked and i transfer my service to T-Mobile but I am not able to get updates can I flash T-Mobile firmware so I can have the T-Mobile interface and updates. What do I need to do to get the updates.
All US variants can flash the firmware interchangeably. Just download the corresponding firmware and flash everything(Except for the modem if you'd want to keep the original modem). You dont need anything special. If the default odin dont work, then try the comey "cracked" version.
Eric1084 said:
All US variants can flash the firmware interchangeably. Just download the corresponding firmware and flash everything(Except for the modem if you'd want to keep the original modem). You dont need anything special. If the default odin dont work, then try the comey "cracked" version.
Click to expand...
Click to collapse
Why is it that we use the CP for AT&T; however, use the Unlocked CP for TMobile? Are the radios the same for the unlocked and T-Mobile variants? Where would I get this information if I needed it in the future?
I have a GS7 edge locked to T-Mobile with the Device Unlock app. Will flashing G9350U firmware unlock my device and bypass the Device Unlock app or will I still need to use this app to unlock?
Radios are different. I flashed ATT Radio after I flashed U firmware. Though honestly I cannot tell the difference
cnewsgrp said:
Radios are different. I flashed ATT Radio after I flashed U firmware. Though honestly I cannot tell the difference
Click to expand...
Click to collapse
you did the sae thing that I am currently doing. going from tmobile (I believe) to AT&T firmware. I am going from verison (which shouldn't matter) but when I did it the first time odin 3.12.7 gave me a message of success after only one "sector" of the whole thing went green. but the phone rebooted to an error message. did I do something wrong? help??
Shadow_Sheik said:
you did the sae thing that I am currently doing. going from tmobile (I believe) to AT&T firmware. I am going from verison (which shouldn't matter) but when I did it the first time odin 3.12.7 gave me a message of success after only one "sector" of the whole thing went green. but the phone rebooted to an error message. did I do something wrong? help??
Click to expand...
Click to collapse
Sorry not an expert, but I read several times here to use Price COmsy ODIN and I use that one. Please try
OTA Update is not working after changing to U firmware.
I had stock T Mobile last firwmare installed, but I was sick of poor battery and lag
so installed this firmware https://forum.xda-developers.com/tmobile-s7-edge/how-to/6-8-t-mobile-935u-firmware-qe2-t3619151, full wipe.
Now I have worst battery performance. 12% draining overnight (6 hours) without touching the phone at all. It shows a new update but it fails when I OTA update. looks like the update it's being installed but fails at the end. Don't know what's wrong but totally hate battery.
Edit: Android pay is also not working..
pierre3408 said:
I Flashed an AT&T S7 Edge with T-Mobile firmware and:
1) Status remains unmodified
2) Android pay works (as well as Samsung pay)
3) I've already got 2 T-Mobile pushed firmware updates that installed without any issues.
Don't know if this helps, but I'd think it would be the same going from T-Mobile to AT&T.
I did also have to use a modified version of "ODIN" and flash a "PIT" file because T-Mobile has a different partition than AT&T.
Click to expand...
Click to collapse
What pit file did you flash? Did you flash the the pit file Odin pulls from your phone? Did you flash an att specific pit file?

ATT unlocked G950U is not updating. Stuck at April firmware

So I got an ATT S8 the G950U version. I unlocked it via ATT with their unlock code.
since then using it on Indian carrier Airtel. I am not been able to get any software updates. Whenever I check for the updates it says its up to date. But its stuck at build number G950USQU1AQC9 and security patch of 1 march 2017.
How do I update this? Do I need to flash ATT software via ODIN? but I need to retain the unlocked status.
You wont get OTA unless you have an ATT sim in it i Think. Just flash G950U1 firmware which is the unlocked version sold by samsung.
I bought a sprint s8 and flashed G950U1 firmware and using on Airtel. Moreover you wont have any carrier bloatware.
It seems Smart Switch also updates when applying initialize. Not connecting your phone before starting up SS gives you the option to input model - and serial #.
And to my knowledge, once unlocked (free to use any SIM) stays unlocked.
suryakiran_r said:
You wont get OTA unless you have an ATT sim in it i Think. Just flash G950U1 firmware which is the unlocked version sold by samsung.
I bought a sprint s8 and flashed G950U1 firmware and using on Airtel. Moreover you wont have any carrier bloatware.
Click to expand...
Click to collapse
Did you flash it with Odin? AFAIK its the only way for snapdragon models. Been away from android tinkering for a long while. Can you point me to relevant threads?
P.S. Are you able to get OTA now?
I have a similar issue but in the UK. Can't see OTA updates and it says up to date in Smart Switch. Is flashing the stock firmware risky or break knox? What are my options?
Search Updato.com for the latest G950U1 firmware. (XAA version is the best region to use in your case). Use THIS version of Odin to flash: http://dl.psouza4.com/android/Odin3_v3.12_PrinceComsy.zip
You will not get updates normally if you don't. Your phone is trying to contact AT&T servers but you don't have their sim card so it's not going to let you download it.
joe3681 said:
Search Updato.com for the latest G950U1 firmware. (XAA version is the best region to use in your case). Use THIS version of Odin to flash: http://dl.psouza4.com/android/Odin3_v3.12_PrinceComsy.zip
You will not get updates normally if you don't. Your phone is trying to contact AT&T servers but you don't have their sim card so it's not going to let you download it.
Click to expand...
Click to collapse
Be careful, the latest u1 firmware is a rev2 bootloader. It will probably be rootable like the n8 one is but no one has confirmed yet. There are also no ready to flash rooted ROMs with it
Root is worthless anyway.

SM-G950U switch to Unlocked ROM?

I have a Sprint Galaxy s8, but I am no longer on Sprint.
Is it possible for me to flash the unlocked ROM, effectively making it SM-G950U1?
My current build nnumber: R16NW.G950USQU5CSA4
I'm hoping when it's available I can flash to the Pie version of G950U1.
lioncat55 said:
I have a Sprint Galaxy s8, but I am no longer on Sprint.
Is it possible for me to flash the unlocked ROM, effectively making it SM-G950U1?
My current build nnumber: R16NW.G950USQU5CSA4
I'm hoping when it's available I can flash to the Pie version of G950U1.
Click to expand...
Click to collapse
Only if Sprint unlocked the device through uicc unlock. If you flash u1 on a locked it's still stuck to the original carrier. As for guides there are several guides in the general section for carrier switching
lioncat55 said:
I have a Sprint Galaxy s8, but I am no longer on Sprint.
Is it possible for me to flash the unlocked ROM, effectively making it SM-G950U1?
My current build nnumber: R16NW.G950USQU5CSA4
I'm hoping when it's available I can flash to the Pie version of G950U1.
Click to expand...
Click to collapse
Yes it is. I just did it yesterday. I was on G950USQS5CSB1 and didn't get wifi calling or VoLTE on Mint Mobile but after flashing G950U1 I now have them.
Since you say you are no longer on Sprint I assume you just want the unbranded G950U1 firmware.
Using samfirm on your computer putin G950U1 as phone and XAA as CSC and search. You should get G950U1UES5CSB2. It is the latest and has the same bootloader as you. Download it.
Download and use the 3B modded version of Odin.
Back up your phone as it will be wiped.
study here how to use Odin..... there are many guides
Use the CSC file not Home_CSC.
Have the sim of your current carrier in the phone when you flash.
6shuter said:
Yes it is. I just did it yesterday. I was on G950USQS5CSB1 and didn't get wifi calling or VoLTE on Mint Mobile but after flashing G950U1 I now have them.
Since you say you are no longer on Sprint I assume you just want the unbranded G950U1 firmware.
Using samfirm on your computer putin G950U1 as phone and XAA as CSC and search. You should get G950U1UES5CSB2. It is the latest and has the same bootloader as you. Download it.
Download and use the 3B modded version of Odin.
Back up your phone as it will be wiped.
study here how to use Odin..... there are many guides
Use the CSC file not Home_CSC.
Have the sim of your current carrier in the phone when you flash.
Click to expand...
Click to collapse
This is exactly what I'm doing. Switched to Mint, but don't heav Wifi or VoLTE. Glad to hear that G950U1 works with both those (was worried I would have to flash TMO to get it).
Thanks again!

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