My Galaxy S7 still says AT&T software and firmware after switch

magenta1824141

    Recently moved from AT&T to T-Mobile, everything (voice, data, text) seems to be working BUT my phone boots up with an AT&T logo, there's all sorts of AT&T crapware still on the phone, and I can't seem to get the latest Android version. Also there some pesky things like the AT&T software build doesn't seem to have a Call Barring feature exposed which is not cool.

     

    I've a Galaxy S7, firmware is G930AUCS4APK1 running Marshmallow 6.0.1 OS.

     

    I can't be the only guy to switch carriers, from AT&T to T-Mobile, and I also can't be the only guy to move over with their S7 they got when at AT&T.

     

    So reaching out for some guidance:

     

    1. I'm not sure I'm getting all of my security patches anymore, or am I as the device firmware suggests its an AT&T build but I'm no longer an AT&T customer?

    2. is there a standard procedure for situations like mine, which can't be unique for customers switching like I am, where I can upgrade my S7 to Nougat with proper T-Mobile firmware too? After all isn't there also a complete firmware update when Nougat is installed with T-Mobile?

     

    many thanks for any help on this ...

      All replies

      • magenta1824141

        Update for the community, for those who came over from AT&T with their unlocked devices.

         

        Just got off a call with T-Mobile Tech Support, and nice enough guy but the message back is we are all screwed if we were hoping for any software updates (or security patches?) from T-Mobile. Best as I can tell T-Mobile (only?) pushes patches and updates to any device on their network with their firmware number only.

         

        Again, nice enough Tech Support but ... its 2017 and while patching / updating software is not trivial, its also not impossible to do better today. You'd think there'd be a smarter way to deal with this backend process, considering every phone has a unique ID!

         

        Just wanted to share with the community ... heads up, and if anyone does find a way to get their updates someway / somehow please let us know.  Thanks ...

          • stevetjr

            You are correct in that you will not get the updates OTA via T-Mobile.  Even though it appears that T-Mobile is sending the update it is actually still coming from Samsung's servers, just the OTA notification is only looking for the TMO model number when the phone is on their network which of course yours isn't a TMO model number.

             

            There is still a way for you to get updates however and that is to use Samsung Smart Switch.  If AT&T has released an update it will be available for your device via smart switch.

             

            While the devices appear the same there are sometimes small differences in the firmware because of network capabilities and TMO devices especially have to have a lot of extra firmware since they have the most advanced network out there.  So the radio for one but also things like wi-fi calling, RCS messaging, GoGo inflight messaging, etc all have to be incorporated at an OS level which is why each carrier has it's own slightly different version of the OS and updates come out on completely different schedules because Samsung has to program them each individually.

             

            There is a way but it is not sanctioned or supported by TMO not to mention if you mess it up it bricks your phone but using software called ODIN and some searching/research on XDA Developers and you can find the software files needed to essentially convert your device from an AT&T version to TMO version but as I previously said if something goes wrong..........

              • magenta1824141

                Stevetjr - awesome.

                 

                That's more than an acceptable answer for me as a customer. Already have the Samsung Smart Switch software and it is a handy set of bits for anyone with a Samsung phone. Would just have been less stressful if T-Mobile published the (alternate) process somewhere. I'm sure customers moving to T-Mobile would understand and appreciate that they can really BYOD in terms we can understand.

                 

                Again awesome response ... many, many thanks ...

                • magenta2452796

                  JULY 2018

                  Hey,

                   

                  I have an S7(SM-G930A) from At&t and Now on TMobile. I have been waiting like everyone else for the new OREO. Is it possible to get the TMobile Version of Oreo vs. the At&t version (G930AUCU4CRE4)?

                  Also, I don't see anywhere on Smart Switch to download current firmware or security updates? It only has 1)backup 2) Restore 3) outlook Sync  ?

                    • stevetjr

                      magenta2452796 wrote:

                       

                      JULY 2018

                      Hey,

                       

                      I have an S7(SM-G930A) from At&t and Now on TMobile. I have been waiting like everyone else for the new OREO. Is it possible to get the TMobile Version of Oreo vs. the At&t version (G930AUCU4CRE4)?

                      Also, I don't see anywhere on Smart Switch to download current firmware or security updates? It only has 1)backup 2) Restore 3) outlook Sync ?

                      In short no you can't download the TMO version on your device officially and to do so you void any kind of warranty and risk bricking your phone.  If interested go search thru xda developers website and you can see if anyone has been successful.  The S7 was still when Samsung had a different model number for each carrier 930A (ATT) 930T (TMO) ect.  While the AT&T version most likely had the same hardware it is not 100% which is why TMO software could be a risk but again XDA if it can be done and successful it would be there although you may not still get updates OTA.

                       

                      If there is an update available for you phone smart switch will tell you, you can also go in and set a preference (choose more in upper left, preferences and then software update tab)  for it to pre-download updates when they are available.  If you know for sure it isn't available you should be able to go to a Best Buy with a Samsung Experience center and they should be able to load it on for you, but it would be the AT&T version.

                • jimnemeth

                  You aren't the only one I just switched and it happens to me