sm-g928t unlock help

please help me to unlock sm-928t

Operation: Unlock
Selected model: SM-G928T
Software version: 26.8

Waiting ADB device… OK
Reading phone info…
Model: SM-G928T
Android version: 6.0.1
Product code: SM-G928TZDETMB
Phone version: G928TUVS4DPH2
PDA version: G928TUVS4DPH2
CSC version: G928TTMB4DPH2
CSC country code: USA
CSC sales code: TMB
HW version: REV1.0
Phone SN: R58GA1AYN5W
Modem board: SHANNON333
RF cal date: 20151013
Checking Super user right… true
Initialization AT RIL… OK
Reading IMEI… OK
IMEI: 353752070273072 (SIGN: OK)
Unlocking… error (0)

Done with Samsung Tool PRO v.26.8