N910T 5.1.1 OK2 unlock Done

after searching for this for a couple of hours, im gonna share it

the trick its to downgrade the modem to nk4
run the unlock process and reflash the ok2 modem back
to repair imei works the same
downgrade reset msl fash back and then write cert

modem files


Operation: Unlock
Selected model: SM-N910T
Selected port: COM35 SAMSUNG Mobile USB Serial Port
Software version: 24.1

Reading phone info…
Reading IMEI… OK
IMEI: 355306065xxxxxxx
Unlocking… OK
Reseting… OK
Unlock done

Done with Samsung Tool PRO v.24.1