G920T unlock

Hello ..
I’ve a galaxy S6 T-mobile locked G920T on 6.0.1
I rooted successfully with CHAINFIRE
tried unlock with Z3X pro . . 27.0
log shows success but no RESULT
the phone shows a pop up message that phone is flashed with unauthorized software locked

IMEI is correct ..
I could’t flash with g920t-metropcs-firmware SBOOT problem