here is log
Selected model: M919
Selected port: COM830 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Searching ADB device...
Please, allow USB debugging on phone... OK
Reading phone info...
Model: SGH-M919
Android version: 4.4.4
Product code: Not Active
Phone version: M919UVUFNH7
PDA version: M919UVUFNH7
CSC version: M919TMBFNH7
IMEI: Unknown
Phone S/N: RV8F30AKNLZ
Checking Super user right... true
Backuping MMCBLK... OK
Checking phone at COM830
Detected ID: 00000FE6 (SURF9615)
SW Version: M9615A-CEFWTAZM-4.0.17173
Reading ESN... OK
Backuping RFNV... OK
Backuping Feature Mask... OK
Backuping NV Item... OK
Backuping NV Item SIM1... OK
Backuping NV Item SIM2... OK
Backuping Provisioning Item Files... OK
Writing data to phone... OK
Rebooting phone... OK
Waiting phone...
Please, allow USB debugging on phone...
Please, allow USB debugging on phone... OK
Reading phone info...
Model: SGH-M919
Android version: 4.4.4
Product code: Not Active
Phone version: M919UVUFNH7
PDA version: M919UVUFNH7
CSC version: M919TMBFNH7
IMEI: Unknown
Phone S/N: RV8F30AKNLZ
Bypass MSL... OK
Unlocking... OK
Reading QCN file... OK
Checking phone at COM830
Detected ID: 00000FE6 (SURF9615)
SW Version: M9615A-CEFWTAZM-4.0.17173
Checking paths... OK
Restoring EFS Backup... OK
Restoring NV Items... OK
Restoring NV Item SIM1... OK
Restoring NV Item SIM2... OK
Restoring Provisioning Item Files... OK
Reseting... OK
Unlock done
Done with Samsung Tool v.18.2
Done with Samsung Tool v.18.