[RearMisser]

I bought this unlocked Samsung Galaxy S7 edge that was originally locked on AT&T. I have it on T-Mobile and when I try to check for an Android update it says it's up to date, but it's on android 6.0.1. I've heard that android 8.0 has been released for this phone. Any ways to update?

[L0n3N1nja]

It either needs a connection to AT&T to get their official update over the air or it should be possible with smart switch on a PC.

In your case smart switch would be the way to go. I think you just download smart switch, connect your phone, and it will check for updates.

[RearMisser]

I did the smart switch way but it says that the software is up to date.