At&t Note20 Ultra unlcoked on T-mobile help

[Horr1bleK1tten]

Any idea how to flash? I have tried flashing tmobile rom but at&t always boots.

 

[mustang7757]

Any idea how to flash? I have tried flashing tmobile rom but at&t always boots.

Sure , I help members here with this .

Can you post a screenshot of software page ?
Go setting>about>software page

 

[Horr1bleK1tten]

Screenshot