My buddy has an ATT Note 8 currently on N950USQU1AQIA. The phone is already unlocked and he is currently using it on T-mobile. I wanted to help him out by switching the phone to T-mobile firmware. I have read the instruction multiple times but I still needed some clarifications before I start since it has been awhile since I used odin. This is my understanding from reading the instruction and if I am wrong could someone please correct me.
1. Flash COMBINATION file that matches the phone's firmware, which is AQIA, using Odin
2. Flash XAC_HOME_CSC using Prince Comsy's Odin
3. Change CSC to desirable carrier, in this case TMB, in CMD.
If successful then proceed to flash T-mobile firmware. This is where I have a question on. Can I flash to the latest T-mobile (Oreo) firmware from AQIA, or do I need to do it in an increment.
Thank you in advance.