installing stock firmware over carrier

[Jessman1988]

Hello. I have an S6 with a company in Alaska called GCI. They remove the system update ability on all their phones with one that never actually receives updates but other than that they always seem stock through and through. Only Samsung apps bloat the phones and not any special carrier apps. My question is, if I flashed the latest official Samsung firmware directly over GCI's 5.0.2 will it most likely function properly or will it probably brick unless I wipe it first? I don't want to lose my data and haven't rooted because this phone has no sd slot. Any suggestions? Thanks.

 

[Pugs1957]

Your phone needs to be sim unlocked before you change the firmware. To see if it is sim unlocked try a different providers sim. If the device asks for an unlock code you are sim locked so will need to ask your provider for the unlock code. They are likely to charge for this. There are many unlocking sites online, too.
You could then have stock firmware but this will still have Samsung bloatware.
If you want stock firmware post back the Baseband version you are running, you can find this in settings/more/about device. Flashing stock firmware will allow you to get updates.
If you want to remove bloatware you will need to root the device which wil invalidate your warranty. I dont know if root access is available on the S6, I dont have one. I have an S4 and was researching the s6/edge as my contract is due anupgrade this month