J120az Unlock failed

I get the error below. Please advise. Flash Eng_boot. root with Kingo Root. Could not get to root with Kingroot APK, but Kingo said sucessful.




Operation: Unlock
Selected model: SM-J120AZ
Software version: 30.9

Waiting ADB device... OK
Reading phone info...
Model: SAMSUNG-SM-J120AZ
Android version: 6.0.1
Product code:
Phone version:
PDA version: J120AZTUU3AQH2
CSC version: J120AZAIO3AQH2
CSC country code: USA
CSC sales code: AIO
HW version: REV0.3
Phone SN: R58J554XAHY
Chip name: EXYNOS3475
Modem board: SHANNON308
Security patch: 2017-08-01
RF cal date: 20170524
IMEI: 3569030856xxxxx
Checking Super user right... true
Reading NV data... OK
Checking NV data... OK
Reading data... OK
Detecting MODEM... OK
Reading MODEM... OK
Calculating... OK
Writing zTool... OK
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data... error (1 19)
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

Done with Samsung Tool PRO v.30.9