g920w8 s6 is not unlocking :-(

Operation: Unlock
Selected model: SM-G920W8
Software version: 24.3

Waiting ADB device…
Please, allow USB debugging on phone… OK
Reading phone info…
Model: SM-G920W8
Android version: 5.1.1
Product code: SM-G920WZWABMC
Phone version: G920W8VLU3BOJ7
PDA version: G920W8VLU3BOL1
CSC version: G920W8OYA3BOL1
CSC country code: Canada
CSC sales code: BMC
HW version: REV1.0
Phone S/N: RF8G72FMG6K
Modem board: SHANNON333
RF cal date: 20150729
Checking Super user right… true
Initialization AT RIL… OK
Check version… OK
Initializating zTool… error (0)
Done with Samsung Tool PRO v.24.3

how to UNLOCK?