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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.

Oreo update on unlocked ATT S8 with T-Mobile sim

I have an unlocked S8 and I have not got the Oreo update Every time I go to check, it says your software is up to date. Is it because I am using a T-Mobile SIM? If yes, do I need to use ATT sim to get the update?

fordfulkerson said:
I have an unlocked S8 and I have not got the Oreo update Every time I go to check, it says your software is up to date. Is it because I am using a T-Mobile SIM? If yes, do I need to use ATT sim to get the update?
Click to expand...
Click to collapse
Yes you need an AT&T sim. Otherwise you will not receive ota updates.

Try it now

When I unlocked my AT&T S8, and stuck in a MetroPCS Sim, MetroPCS updated the phone to Oreo. This also results in the boot logo changing to MetroPCS which I think is unfortunate. And it installed a couple of Metro PCS apps including the voicemail app. This was all interesting since this means a carrier will update an OS on a phone that was originally sold for a different carrier. Seems that could run into problems but maybe not.

Did you figure it out?
fordfulkerson said:
I have an unlocked S8 and I have not got the Oreo update Every time I go to check, it says your software is up to date. Is it because I am using a T-Mobile SIM? If yes, do I need to use ATT sim to get the update?
Click to expand...
Click to collapse
I have an AT&T unlocked S8 Active with a t-mobile sim. I tried using an old AT&T sim with no plan, but it did not work. Do I need a sim with a plan to do the stupid update?

Take it to a Samsung Experience in a Large Best Buy and get them to Update it.
http://www.samsung.com/us/samsung-experience-shop/

Is there any way to manually update it to the latest version? Caz I am stuck on Android 7.0 as well, it won't update.

martyh1 said:
When I unlocked my AT&T S8, and stuck in a MetroPCS Sim, MetroPCS updated the phone to Oreo. This also results in the boot logo changing to MetroPCS which I think is unfortunate. And it installed a couple of Metro PCS apps including the voicemail app. This was all interesting since this means a carrier will update an OS on a phone that was originally sold for a different carrier. Seems that could run into problems but maybe not.
Click to expand...
Click to collapse
How long after putting in your metropcs sim did the phone update? I just unlocked an att s8 active today registered on my metropcs account but as of this moment it says it is up to date when it is clearly not.
Thank you

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

SM-T827R (US Cellular) flashed with T827V (Verizon Oreo) - Working no issues

I purchased a US Cellular branded Tab S3 to use on AT&T when I found out they sell them unlocked. I also recently wanted Oreo on it and after some digging found US Cellular still hasn't released an update but there was one from Turkey and one from VzW. I tried to find a concrete yes/no if I can flash other variants of the T827 models firmware without luck so figured I'd roll the dice on it myself. This weekend I tracked down the VzW Oreo firmware and used Odin to install it on my US Cell Tab. The first round I had a couple of errors and for a second thought I had a new paper weight, but kept calm and ran through the process again and it worked!
Just a note:
At first boot it will say the SIM is invalid and to put in a VzW SIM, but you can click ok and keep going. Once done setting up on wifi you can then go into settings and add the AT&T APN and connect over cell.

Could you post where you got the VZW image? I'd like to try this. I can't believe USC hasn't updated their tabs yet. I'm tired of asking when the update will arrive!

alfredtv said:
I purchased a US Cellular branded Tab S3 to use on AT&T when I found out they sell them unlocked. I also recently wanted Oreo on it and after some digging found US Cellular still hasn't released an update but there was one from Turkey and one from VzW. I tried to find a concrete yes/no if I can flash other variants of the T827 models firmware without luck so figured I'd roll the dice on it myself. This weekend I tracked down the VzW Oreo firmware and used Odin to install it on my US Cell Tab. The first round I had a couple of errors and for a second thought I had a new paper weight, but kept calm and ran through the process again and it worked!
Just a note:
At first boot it will say the SIM is invalid and to put in a VzW SIM, but you can click ok and keep going. Once done setting up on wifi you can then go into settings and add the AT&T APN and connect over cell.
Click to expand...
Click to collapse
Not sure that was a good idea. If indeed you did manage to flash the VZW bootloader then the tablet is now likely bootloader locked with no way of returning to its original state.

ashyx said:
Not sure that was a good idea. If indeed you did manage to flash the VZW bootloader then the tablet is now likely bootloader locked with no way of returning to its original state.
Click to expand...
Click to collapse
Was this verified to be the case? Also would the verizon combination file work on the uscelluar tablet? I picked up a cheap SM-T827R4 that is FRP locked. I am waiting to hear back from the original owner if they would be willing to bypass the verification for me.

Writermike said:
Was this verified to be the case? Also would the verizon combination file work on the uscelluar tablet? I picked up a cheap SM-T827R4 that is FRP locked. I am waiting to hear back from the original owner if they would be willing to bypass the verification for me.
Click to expand...
Click to collapse
I was able to flash the combo file for the SM-T827V (Verizon version of the Tab S3) to bypass the FRP lock. I used the one on gsm-firmware.com After which I was able to reflash the uscelluar firmware from sammobile. I don't know if this is exactly the same as the OP's method, but hope it helps someone else out in the future.

Writermike said:
I was able to flash the combo file for the SM-T827V (Verizon version of the Tab S3) to bypass the FRP lock. I used the one on gsm-firmware.com After which I was able to reflash the uscelluar firmware from sammobile. I don't know if this is exactly the same as the OP's method, but hope it helps someone else out in the future.
Click to expand...
Click to collapse
Sorry for the late reply on this. I downloaded the image files from sammobile and installed them with odin. I've been up and running on Oreo (VzW branded) since my post and have had no issues or reasons to flash to anything else. I have tried to run an update but it says it can't register, which i assume is because it's hitting the VzW servers w an ATT SIM from a USC device!
Sent from my SM-G955U using Tapatalk

alfredtv said:
I have tried to run an update but it says it can't register, which i assume is because it's hitting the VzW servers w an ATT SIM from a USC device!
Sent from my SM-G955U using Tapatalk
Click to expand...
Click to collapse
You just need to put a Verizon SIM in it once (and so far only once) to check for updates. The SIM doesn’t even need to be provisioned. Then you can check for updates with your normal SIM.
I’ve had a VZW Tab S3 for over a year that I have been using with AT&T. I updated to Oreo without any issues with my AT&T SIM installed.

Wanted to first say thanks for the tip -- and echo that The T827R4 does in accept the Verizon Oreo firmware via the latest version of Odin, though with a build just a few releases behind it threw an error and would not flash.
I guess if we can't have root we may as well have Oreo.

Samemobile has the January security update Oreo
alfredtv said:
I purchased a US Cellular branded Tab S3 to use on AT&T when I found out they sell them unlocked. I also recently wanted Oreo on it and after some digging found US Cellular still hasn't released an update but there was one from Turkey and one from VzW. I tried to find a concrete yes/no if I can flash other variants of the T827 models firmware without luck so figured I'd roll the dice on it myself. This weekend I tracked down the VzW Oreo firmware and used Odin to install it on my US Cell Tab. The first round I had a couple of errors and for a second thought I had a new paper weight, but kept calm and ran through the process again and it worked!
Just a note:
At first boot it will say the SIM is invalid and to put in a VzW SIM, but you can click ok and keep going. Once done setting up on wifi you can then go into settings and add the AT&T APN and connect over cell.
Click to expand...
Click to collapse
I just updated to Oreo for SM-T827R4 to January security patch 8.0.0 firmware from Sammobile and it working great.

my370z said:
I just updated to Oreo for SM-T827R4 to January security patch 8.0.0 firmware from Sammobile and it working great.
Click to expand...
Click to collapse
You're right about Verizon firmware running really smooth. Much better than the US Cellular firmware. After flashed VZ firmware, the model changed to SM-T827V.

in case anyone has the us cellular model, you really don't need to flash the verizon firmware because the us cellular model has a more updated firmware than the verizon model.
the model is actually SM-T827R4, oreo with apr 2019 security and OTA update works too.
though no pie update yet (same as verizon)

So these can't be flashed to the stock 820 pie rom?

picachux said:
So these can't be flashed to the stock 820 pie rom?
Click to expand...
Click to collapse
good news, the official pie is available now, OTA downloading now
Verizon model still stuck at oreo

supaet said:
good news, the official pie is available now, OTA downloading now
Verizon model still stuck at oreo
Click to expand...
Click to collapse
Thanks for the heads up will check when I get home.
Sent from my SM-T827R4 using Tapatalk

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.
Click to expand...
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.
Click to expand...
Click to collapse
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?
Click to expand...
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.