SM-G975U1 Firmware Flash to AT&T - Samsung Galaxy S10+ Questions & Answers

I bought a replacement S10+ for my AT&T account. I got it from Samsung and chose the Unlocked version. Come to find out, it appears the unlocked version does not support AT&T NumberSync. I have a Galaxy watch that I wanted the NumberSync feature with my S10+. Can I download an AT&T firmware and flash it to my phone to have it work with the AT&T features such as NumberSync, VoLTE, etc. Is it as simple as just downloading the AT&T firmware, launching Odin, rebooting phone into Download / Odin mode, selecting the files and flashing? Thanks.
-NVE

If you can find the AT&T firmware to flash you should be able to switch. The problem is that unlike Sprint, Verizon and T-Mobile AT&T apparently doesn't release their firmware to third party sites like Samfirm and it isn't available to download on the XDA thread with carrier specific firmware links.

Att s10 plus
NVETHIS said:
I bought a replacement S10+ for my AT&T account. I got it from Samsung and chose the Unlocked version. Come to find out, it appears the unlocked version does not support AT&T NumberSync. I have a Galaxy watch that I wanted the NumberSync feature with my S10+. Can I download an AT&T firmware and flash it to my phone to have it work with the AT&T features such as NumberSync, VoLTE, etc. Is it as simple as just downloading the AT&T firmware, launching Odin, rebooting phone into Download / Odin mode, selecting the files and flashing? Thanks.
-NVE
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Click to collapse
Hi i noticed that u purchased a unlocked version from Samsung.. I actually was with att n purchased a att version of the s10 plus.. Then i ended up switching to tmobile.. N i ended up having my att version s10 plus
UNLOCKED.. But being that its an att s10 plus i can't use some of the apps from tmobile.. Im not planning on buying another s10 plus just for some apps.. But if you are willing like I am.. I would trade my att s10 plus for your Samsung unlocked version... Pm me if u r interested if not thanks.. I think it will work out well for both of us

jhs39 said:
If you can find the AT&T firmware to flash you should be able to switch. The problem is that unlike Sprint, Verizon and T-Mobile AT&T apparently doesn't release their firmware to third party sites like Samfirm and it isn't available to download on the XDA thread with carrier specific firmware links.
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Click to collapse
I read the thread in this forum that linked the firmwares, and there was AT&T, but I'm confused now on the bootloader version. Do I have to flash to a SM-G975U then to an AT&T firmware, then to U1 again? idk. Also, I found this from a google search and downloaded it the other day, an AT&T firmware: https://www.sammobile.com/samsung/g...SM-G975U1/ATT/download/G975U1UES1ASDB/273101/
-NVE

Related

Won't search for latest OTA updates

Hi, I bought a Galaxy S7 edge sm-g935a, and I'm using it here in Japan with other network. I'm just wondering why everytime I check for an update, it always says I'm on the latest firmware even when I'm like 3 or 4 versions behind. Even when I connect it to smart switch it also says I'm on the latest firmware too, and when I try to click on firmware upgrade and device initialization, it says "Galaxy S7 Edge does not support initializing, please contact customer support". What should I do to get OTA updates? Thanks
AT&T phones will not receive OTA updates if you're not on the AT&T network. You have to manually flash them. You could keep downloading the latest firmware and flash it, or you could download the U firmware, which will receive updates regardless of carrier.
Sent from my SAMSUNG-SM-G935A using Tapatalk
ajemnace said:
Hi, I bought a Galaxy S7 edge sm-g935a, and I'm using it here in Japan with other network. I'm just wondering why everytime I check for an update, it always says I'm on the latest firmware even when I'm like 3 or 4 versions behind. Even when I connect it to smart switch it also says I'm on the latest firmware too, and when I try to click on firmware upgrade and device initialization, it says "Galaxy S7 Edge does not support initializing, please contact customer support". What should I do to get OTA updates? Thanks
Click to expand...
Click to collapse
I'd consider switching to the 935U Firmware, it kills the useless AT&T bloat, and you'll get OTA's
https://forum.xda-developers.com/att-s7-edge/how-to/updated-935u-935a-live-links-pi3-t3501686
stew1411 said:
AT&T phones will not receive OTA updates if you're not on the AT&T network. You have to manually flash them. You could keep downloading the latest firmware and flash it, or you could download the U firmware, which will receive updates regardless of carrier.
Sent from my SAMSUNG-SM-G935A using Tapatalk
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Click to collapse
Thanks man, I tried searching for its latest firmware but none of it seems to work out, I found some on google and download it but when I tried to unzip the files, all the files that I've downloaded we're corrupted LOL. I'm now switching to 935U firmware :good:
My S7 edge won't update either. I seem to be stuck on the May 2017 security update (Build # G935AUCS4BQE1). I bought my phone from swappa.com last month. The seller had it listed in the AT&T section as the SM-935A. I can use it for the most part without any issues (no Wi-Fi calling, not recognized on the AT&T network). When I check the IMEI # with Samsung, they show it listed for Sprint. Any suggestions of what I should do? I know one option is to flash the 935U firmware.
Thanks in advance.
caferacer73 said:
My S7 edge won't update either. I seem to be stuck on the May 2017 security update (Build # G935AUCS4BQE1). I bought my phone from swappa.com last month. The seller had it listed in the AT&T section as the SM-935A. I can use it for the most part without any issues (no Wi-Fi calling, not recognized on the AT&T network). When I check the IMEI # with Samsung, they show it listed for Sprint. Any suggestions of what I should do? I know one option is to flash the 935U firmware.
Thanks in advance.
Click to expand...
Click to collapse
All US (Snapdragon) based S7 Edges are physically identical, so you can run AT&T firmware on a Sprint S7E and vice-versa. However, AT&T is well known for disabling features based on IMEI, which it appears they are doing for WiFi calling. Unfortunately, it appears someone converted a device that started life on Sprint, so unfortunately you may be out of luck. The only way to fix the problem that I am aware of is to temporarily switch your SIM out for an actual AT&T device (whose IMEI is recognized), and that supports WiFi calling and VoLTE, then put the SIM back in your converted S7 Edge.
Converting to U will definitely make the phone a LOT faster (and the battery last longer), but you are giving up on any carrier features period at that point. I personally felt that the performance and battery features were a lot more important to me than WiFi calling or VoLTE and I switched to U a while ago. I haven't looked back, but that's just me.
Thanks jshamlet. I did a chat with Samsung and they confirmed that my phone was originally setup for Sprint and that it has been unlocked. My fiancee has an AT&T branded S7 Edge, so I can try putting my SIM in her phone for a bit. Converting to the U is something I'll seriously consider. I had an unlocked Moto X Pure Edition, so I'm used to not having the Wi-Fi calling or VoLTE.
I ended up using Odin to flash the SM-G935U firmware to my phone. Once that was finished, it downloaded and installed the April - August security updates, so I'm happy now. Also, no AT&T bloatware.
Here are the Firmware updates for the ATT 935A.
https://forum.xda-developers.com/att-s7-edge/how-to/updates-g935a-servers-adb-sideloads-t3583165

AT&T Galaxy S8 software update

I have a question. I have the Unlocked AT&T Samsung Galaxy S8 (didn't realise it was AT&T until I received it and turned it on) and when I go to update the software it says it is up to date but it is not. How do I update my software? I am not rooted or anything, the phone is in its normal state.
Is it an unlocked S8 with AT&T firmware or an unlocked AT&T S8? Also, what carrier are you using?
Either way, you can use Odin to flash the newest firmware. Search Updato.com for the firmware for G950U (AT&T variant if you want bloat) or for the G950U1 if you want actual unlocked firmware with no bloat. However, the newest that they have posted if CRF5 and CG3 just came out the other day.
I asked about carrier because:
If you're running on Tmobile for example, use the tmobile firmware. You'll have bloat but you'll get all the features and you'll be good to go on updates.
If you're using Tmobile and want Unlocked firmware download the TMO coded U1 firmware and again, you'll be good with updates.
@jpcdeux I would think it has AT&T firmware because it came with a few AT&T apps on it. However, it is not locked to at&t so I am able to use it in my country (St. Kitts).
Would I have to root?
No, rooting is not required to flash unlocked firmware
Thanks much @jpcdeux

Obtaining ATT Specific Functions On An Unlocked Phone

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.
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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.

Flashing unlocked U1 Firmware on Verizon SM-G975U

Hello! I've been out of the Android scene for a few years so I have a question that I can't seem to find the answer to by searches.
Can I flash the unlocked U1 firmware to a Verizon S10+ and use it on AT&T? I know I'll lose VoLTE and WiFi calling, but I don't really care about those. Mainly, I'm just trying to see if I can use a Verizon S10+ on AT&T. Ideally, I'd like to flash the AT&T firmware on the device but from what I've gathered, that firmware isn't available yet.
I had a Galaxy S8+ when it came out and I used Odin to flash between U1 and AT&T firmware so the process isn't entirely new to me.
A bit of background:
I'm looking to jump off of the dead iPhone train and hop back into Android with the S10+. I'm currently trying to sell/trade my iPhone XS Max in order to make the switch.
I have someone who is willing to trade me their Black S10+ for my iPhone as an even trade but their S10+ is from Verizon. It's unlocked but it's still running the stock Verizon firmware.
I just want to know what I have to do with this trade in order for it to work for me. I want to make sure I get a phone I can use. Any advice or input would be greatly appreciated!
Thanks for any help!
I'm not entirely sure if this will work on the S10+, I haven't tried it yet, but when I had the S8+(it was from Verizon as well), I'd take it internationally with a different sim card, it would just prompt me to reboot the phone and it would automatically apply the appropriate CSC settings. I was on stock VZW firmware as well and VoLTE worked (wifi calling didnt).
You should be fine either way though, people have successfully flashed the U1 firmware on their VZW devices for the S10+, so you shouldn't have any issues getting your AT&T sim card to work on it.
Edit: link to get the U1 firmware
https://forum.xda-developers.com/s10-plus/how-to/sm-g975u-firmware-downloads-tmo-spr-att-t3908657
aroy97 said:
I'm not entirely sure if this will work on the S10+, I haven't tried it yet, but when I had the S8+(it was from Verizon as well), I'd take it internationally with a different sim card, it would just prompt me to reboot the phone and it would automatically apply the appropriate CSC settings. I was on stock VZW firmware as well and VoLTE worked (wifi calling didnt).
You should be fine either way though, people have successfully flashed the U1 firmware on their VZW devices for the S10+, so you shouldn't have any issues getting your AT&T sim card to work on it.
Edit: link to get the U1 firmware
https://forum.xda-developers.com/s10-plus/how-to/sm-g975u-firmware-downloads-tmo-spr-att-t3908657
Click to expand...
Click to collapse
I wish Samsung included the BYOD update in the S10+, that would make it so much easier. I think I'm just gonna make the trade.
I've read through that thread and that's what I think I'm going to do. I'd much rather flash the AT&T version, but seeing as how it's not available, the U1 will do fine until it's released. I'll just need to switch to a different voicemail service in the meantime. lol
I got a Verizon S10+ and it is running build PPR1.180610.011.G975USQS2ASGB, I have confirmed that putting an AT&T SIM gives me network ability to call and what not. I want to flash the stock U1 branded firmware, is it okay if I flash G975U1UEU1ASD8 with Odin?
SimplyNando said:
Hello! I've been out of the Android scene for a few years so I have a question that I can't seem to find the answer to by searches.
Can I flash the unlocked U1 firmware to a Verizon S10+ and use it on AT&T? I know I'll lose VoLTE and WiFi calling, but I don't really care about those. Mainly, I'm just trying to see if I can use a Verizon S10+ on AT&T. Ideally, I'd like to flash the AT&T firmware on the device but from what I've gathered, that firmware isn't available yet.
I had a Galaxy S8+ when it came out and I used Odin to flash between U1 and AT&T firmware so the process isn't entirely new to me.
A bit of background:
I'm looking to jump off of the dead iPhone train and hop back into Android with the S10+. I'm currently trying to sell/trade my iPhone XS Max in order to make the switch.
I have someone who is willing to trade me their Black S10+ for my iPhone as an even trade but their S10+ is from Verizon. It's unlocked but it's still running the stock Verizon firmware.
I just want to know what I have to do with this trade in order for it to work for me. I want to make sure I get a phone I can use. Any advice or input would be greatly appreciated!
Thanks for any help!
Click to expand...
Click to collapse
HEY I know have the same problem... Does it work.., I have installed the firmware and all so should I go for it.., waiting for your reply
I have Verizon unlocked phone and I'm able to use internationally where there is no Verizon, but I'm not getting updates so I have downloaded latest firmware should I flash it, also now I don't need any Verizon sim after flashing right ?
Yes you can flash U1 firmware to a U device and vica versa. The U means Universal, so you can flash AT&T, Verizon, T-mobile, or unlocked firmware to it. You gotta use the patched version of Odin though.
SimplyNando said:
Hello! I've been out of the Android scene for a few years so I have a question that I can't seem to find the answer to by searches.
Can I flash the unlocked U1 firmware to a Verizon S10+ and use it on AT&T? I know I'll lose VoLTE and WiFi calling, but I don't really care about those. Mainly, I'm just trying to see if I can use a Verizon S10+ on AT&T. Ideally, I'd like to flash the AT&T firmware on the device but from what I've gathered, that firmware isn't available yet.
I had a Galaxy S8+ when it came out and I used Odin to flash between U1 and AT&T firmware so the process isn't entirely new to me.
A bit of background:
I'm looking to jump off of the dead iPhone train and hop back into Android with the S10+. I'm currently trying to sell/trade my iPhone XS Max in order to make the switch.
I have someone who is willing to trade me their Black S10+ for my iPhone as an even trade but their S10+ is from Verizon. It's unlocked but it's still running the stock Verizon firmware.
I just want to know what I have to do with this trade in order for it to work for me. I want to make sure I get a phone I can use. Any advice or input would be greatly appreciated!
Thanks for any help!
Click to expand...
Click to collapse
As Just changing csc without installing the system is more than enough. Even the company logo changes. Just look for the samkey program and you will see

AT&T model and lack of updates

Hello. I wanted to ask about a problem that I have experienced with the S10+, which I know others have experienced as well, and hope there is a solution out there for it. I purchased the S10+ directly from Samsung, as they were offering a much better trade-in deal. However, I did purchase the AT&T version.
That being said..aside from the 2 fingerprint reader updates Samsung has issued, I have never received an OTA update from AT&T. Not a single one. I've had to come here to XDA, hope that someone posts the latest update files, and update using Odin. It appears that those files are being posted less and less. I'm "stuck" on ASGB update, with the July 1 Security patch.
Does anybody have any advice, or suggestions on how I could go about getting regular OTA updates? Or is there other recommendations on what to do here? I know there are many others that have this same problem.
Thanks in advance
Lavman72 said:
Hello. I wanted to ask about a problem that I have experienced with the S10+, which I know others have experienced as well, and hope there is a solution out there for it. I purchased the S10+ directly from Samsung, as they were offering a much better trade-in deal. However, I did purchase the AT&T version.
That being said..aside from the 2 fingerprint reader updates Samsung has issued, I have never received an OTA update from AT&T. Not a single one. I've had to come here to XDA, hope that someone posts the latest update files, and update using Odin. It appears that those files are being posted less and less. I'm "stuck" on ASGB update, with the July 1 Security patch.
Does anybody have any advice, or suggestions on how I could go about getting regular OTA updates? Or is there other recommendations on what to do here? I know there are many others that have this same problem.
Thanks in advance
Click to expand...
Click to collapse
Are you using an AT&T SIM card? If you purchased an AT&T model AT&T sends OTA updates whether you got it from AT&T or Samsung. If you aren't using an AT&T SIM they won't send you any OTA updates and Samsung only sends OTA updates to the carrier free versions of the phones.
Yes, using an AT&T SIM card. In fact, I went to the local store and requested a brand new sim, just in case. That obviously didn't work either.
Lavman72 said:
Yes, using an AT&T SIM card. In fact, I went to the local store and requested a brand new sim, just in case. That obviously didn't work either.
Click to expand...
Click to collapse
All US S10+'s are the same. There is no such thing as a AT&T or Verizon phone on the S10+. That being said you can load any rom from any vendor on your phone. If you want to stick with AT&T and don't mind their bloat apps you can go to www.sammobile.com and download the latest AT&T rom and load it with Qdin. Make sure your sim card is installed when you reboot and you will have an AT&T phone when it is done.
HolyHog said:
All US S10+'s are the same. There is no such thing as a AT&T or Verizon phone on the S10+. That being said you can load any rom from any vendor on your phone. If you want to stick with AT&T and don't mind their bloat apps you can go to www.sammobile.com and download the latest AT&T rom and load it with Qdin. Make sure your sim card is installed when you reboot and you will have an AT&T phone when it is done.
Click to expand...
Click to collapse
Prior to August or September firmware on the S10+ was not all-inclusive. If you used an unlocked AT&T S10+ with a different carrier's SIM the AT&T firmware stayed rather than updating to accommodate the inserted SIM card. AT&T doesn't send OTA updates to phones running AT&T firmware if a non-AT&T SIM is inserted and as long as the AT&T firmware is installed AT&T is the only place you can get an OTA update from. You can't even update with SmartSwitch because it will show that you have the latest firmware regardless of how old it is.
I purchased an unlocked AT&T S10+ in early July that was on the February security patch and have a T-mobile SIM. The only way I could get software updates was to manually flash the U1 carrier free firmware with Odin. Immediately after flashing that firmware multiple OTA updates showed up for my phone.
---------- Post added at 01:18 AM ---------- Previous post was at 01:10 AM ----------
AT&T offers a modded version of SmartSwitch that you can download from their website. You might be able to update to the most current AT&T firmware using their software which is called AT&T SmartSwitch. The standard Samsung SmartSwitch program doesn't access AT&T servers and won't update phones with AT&T firmware.
HolyHog said:
All US S10+'s are the same. There is no such thing as a AT&T or Verizon phone on the S10+. That being said you can load any rom from any vendor on your phone. If you want to stick with AT&T and don't mind their bloat apps you can go to www.sammobile.com and download the latest AT&T rom and load it with Qdin. Make sure your sim card is installed when you reboot and you will have an AT&T phone when it is done.
Click to expand...
Click to collapse
Why did I have to pick the carrier when purchasing the phone via Samsung? I could have selected the unlocked version, or any of the american carriers. I have the AT&T model. I see the logo when I boot up, and have all their bloatware apps. So that's not the issue. The issue is why haven't I received an OTA update, ever?
I use this threadhttps://forum.xda-developers.com/galaxy-s10/how-to/att-ota-ota-updates-t3909697 to manually update. The OP hasn't posted any new versions in a while.
jhs39 said:
Prior to August or September firmware on the S10+ was not all-inclusive. If you used an unlocked AT&T S10+ with a different carrier's SIM the AT&T firmware stayed rather than updating to accommodate the inserted SIM card. AT&T doesn't send OTA updates to phones running AT&T firmware if a non-AT&T SIM is inserted and as long as the AT&T firmware is installed AT&T is the only place you can get an OTA update from. You can't even update with SmartSwitch because it will show that you have the latest firmware regardless of how old it is.
I purchased an unlocked AT&T S10+ in early July that was on the February security patch and have a T-mobile SIM. The only way I could get software updates was to manually flash the U1 carrier free firmware with Odin. Immediately after flashing that firmware multiple OTA updates showed up for my phone.
---------- Post added at 01:18 AM ---------- Previous post was at 01:10 AM ----------
AT&T offers a modded version of SmartSwitch that you can download from their website. You might be able to update to the most current AT&T firmware using their software which is called AT&T SmartSwitch. The standard Samsung SmartSwitch program doesn't access AT&T servers and won't update phones with AT&T firmware.
Click to expand...
Click to collapse
happen to have remember the thread which had the carrier free firmware?
Lavman72 said:
Why did I have to pick the carrier when purchasing the phone via Samsung? I could have selected the unlocked version, or any of the american carriers. I have the AT&T model. I see the logo when I boot up, and have all their bloatware apps. So that's not the issue. The issue is why haven't I received an OTA update, ever?
I use this threadhttps://forum.xda-developers.com/galaxy-s10/how-to/att-ota-ota-updates-t3909697 to manually update. The OP hasn't posted any new versions in a while.
Click to expand...
Click to collapse
Your OTA updates come from AT&T since you are their customer and purchased the AT&T model instead of the carrier free one. You should really be asking AT&T why you aren't receiving OTA updates.
You might be able to update using AT&T SmartSwitch which you can download from AT&T's website.
jhs39 said:
Your OTA updates come from AT&T since you are their customer and purchased the AT&T model instead of the carrier free one. You should really be asking AT&T why you aren't receiving OTA updates.
You might be able to update using AT&T SmartSwitch which you can download from AT&T's website.
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Click to collapse
I've tried contacting AT&T numerous times. They have no idea what the issue is. A quick google search shows the Smart switch tool in AT&T, but when you try and click on the link, it just takes you to a blank page.
Newer firmware is all-inclusive so you could download firmware with Frija and flash it with modified Odin even if it isn't AT&T firmware. The problem is that if you flash a build number AT&T didn't actually use on their devices you still won't get OTA updates from AT&T because their servers won't recognize the software version you are running.
---------- Post added at 02:03 AM ---------- Previous post was at 01:58 AM ----------
Lavman72 said:
I've tried contacting AT&T numerous times. They have no idea what the issue is. A quick google search shows the Smart switch tool in AT&T, but when you try and click on the link, it just takes you to a blank page.
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Have you tried the standard Samsung SmartSwitch program? Maybe it can update AT&T firmware now but it didn't in the past.
---------- Post added at 02:13 AM ---------- Previous post was at 02:03 AM ----------
If your phone is not carrier locked you could flash the U1 firmware and then you would get OTA updates from Samsung instead of AT&T. But you might not have access to some AT&T services like visual voicemail without AT&T firmware. AT&T also hates unlocked phones so it's possible Volte and Wi-Fi Calling will stop working. Some AT&T customers with unlocked phones were able to get the services activated by calling AT&T but success with AT&T Customer Service is hit or miss at best as you already discovered.
I have the same problem I have been able to update my S10 + AT&T through ODIN, because I cannot update using FOTA, I have the September security patch specifically "G975USQS2ASI6", I want to update to the October patch, but I do not receive the update via FOTA, because I do not use AT&T SIM but I am abroad using with another SIM.
I can Flashear with ODIN to the U1 version that is unlocked, I will not have any problem, I am not interested in losing any AT&T service because I do not use any, I just want to have my S10 + free of Bloatware and always receive updates via FOTA.
I found this Firmware is Sammobile "https://www.sammobile.com/samsung/galaxy-s10-plus/firmware/SM-G975U1/ATT/download/G975U1UEU2BSIP/298471/"
It is the most recent update of AT&T that they have on the official website, but it is G975U1 unlocked and not the G975U. If Flash this version will I have any problem freezing or ruining my phone?
rodix_t said:
I have the same problem I have been able to update my S10 + AT&T through ODIN, because I cannot update using FOTA, I have the September security patch specifically "G975USQS2ASI6", I want to update to the October patch, but I do not receive the update via FOTA, because I do not use AT&T SIM but I am abroad using with another SIM.
I can Flashear with ODIN to the U1 version that is unlocked, I will not have any problem, I am not interested in losing any AT&T service because I do not use any, I just want to have my S10 + free of Bloatware and always receive updates via FOTA.
I found this Firmware is Sammobile "https://www.sammobile.com/samsung/g...M-G975U1/ATT/download/G975U1UEU2BSIP/298471/"
It is the most recent update of AT&T that they have on the official website, but it is G975U1 unlocked and not the G975U. If Flash this version will I have any problem freezing or ruining my phone?
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Click to collapse
No G975U1 and G975U firmware are interchangeable. If your phone was still carrier locked you might get a message asking for the unlock code but you aren't using an AT&T SIM so your phone obviously isn't network locked. I went from AT&T G975U firmware to U1 firmware with no problems.
Im glad I'm not the only one experiencing this. My wife and I did a bogo deal for the Galaxy s10+ back in March. My phone has recieved updates regularly, while my wife's phone is still on the March patch and security. She hasn't even recieved the fingerprint update fix. Tried calling AT&T about it and they were totally unhelpful. Told me I had to contact Samsung about that and that they couldn't help with the issue. Im debating on calling them back and trying to speak with someone more knowledgeable, but it might just be easier for me to update her phone manually. I haven't had to do something like that in ages, so I wanted to ask for some guidance on here.
Would i need to do each consecutive update she's missed manually? Or would just updating to the newest firmware outright do the trick?
rodix_t said:
I have the same problem I have been able to update my S10 + AT&T through ODIN, because I cannot update using FOTA, I have the September security patch specifically "G975USQS2ASI6", I want to update to the October patch, but I do not receive the update via FOTA, because I do not use AT&T SIM but I am abroad using with another SIM.
I can Flashear with ODIN to the U1 version that is unlocked, I will not have any problem, I am not interested in losing any AT&T service because I do not use any, I just want to have my S10 + free of Bloatware and always receive updates via FOTA.
I found this Firmware is Sammobile "https://www.sammobile.com/samsung/galaxy-s10-plus/firmware/SM-G975U1/ATT/download/G975U1UEU2BSIP/298471/"
It is the most recent update of AT&T that they have on the official website, but it is G975U1 unlocked and not the G975U. If Flash this version will I have any problem freezing or ruining my phone?
Click to expand...
Click to collapse
Hey do you have the G975USQS2ASI6 ODIN files? I have been looking all over for it to flash it to my phone.
I just want to note, I am also in the same boat and it's INCREDIBLY frustrating. Both phones purchased in March with the BOGO deal, both phones stuck on the July 1st security patch. Supposedly what I've found after reading quite a bit is you can bring the phone to a local samsung repair center and they can flash the newest firmware, once you're up to date SUPPOSEDLY that resolves the OTA stuff. I don't believe it though.

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