Hi mustang7757,
I have an AT&T Galaxy Note 9 (SM-N960U)
I am using it in Asia outside of US so i think its unlocked
I was on (Android version: 8.1.0) N960USQS1ARL2 , so i wanted to upgrade to Android version: 9.0 (N960USQU1CSAA)
I downloaded the update from firmware.science and applied the...