j730f not unlock

Waiting ADB device... OK
Reading phone info...
Model: SM-J730F
Android version: 7.0
Product code: SM2J730FZKDXEO
Phone version: J730FXXU1AQI5
PDA version: J730FXXU1AQI5
CSC version: J730FXEO1AQI1
CSC country code: Poland
CSC sales code: XEO
HW version: MP 0.500
Phone SN: R58K20N4X1X
Chip name: EXYNOS7870
Modem board: SHANNON315
Security patch: 2017-08-01
RF cal date: 20180204
IMEI: 356204091249878
Checking Super user right... true
Reading NV data... OK
Checking NV data... OK
Reading data... OK
Detecting MODEM... OK
Reading MODEM... OK
Calculating... error (0 6)
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... error (0)
Try downgrade modem if possible