at&t s7 edge to official firmware

[Android Central Question]

i have a s7 edge sm-g925f but in it is installed sm-g935a firmware 6.0.1
i have tried to upgrade manually with odin,smartswitch,kies but can't be upgraded
if is any method please help me!

 

[Rukbat]

The F is the global variant, not the AT&T variant. I'd flash the stock F ROM to it. (Either don't flash the CSC files or back everything up first - flashing the CSC files wipes all user data.)