I'm using an unlocked U1 on T-mobile US and just used the google dialer to switch CSC to XAR (Which I don't think you HAVE to do). Just use frija and download SM-F916W region XAC and use Odin patched. Up and running with no issues.
**updated i actually used model SM-F916W region XAC in Frija.
**updated i actually used model SM-F916W region XAC in Frija.
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