g850f imei null after unlock

g850f imei null after unlock and i write cert from here and still null
this is the logo

Selected model: SM-G850F
Selected port: COM3 Z3X BOX Serial Port
Selected port speed: 115200
Waiting ADB device…
Please, allow USB debugging on phone…
Operation aborted
Done with Samsung Tool v.19.1

Selected model: SM-G850F
Selected port: COM3 Z3X BOX Serial Port
Selected port speed: 115200
Checking certificate file… OK
Waiting ADB device… OK
Reading phone info…
Model: Unknown
Android version: Unknown
Product code: Unknown
Phone version: Unknown
PDA version: Unknown
CSC version: Unknown
IMEI: Unknown
Phone S/N: Unknown
Checking Super user right… false
Not supported version for auto root
Done with Samsung Tool v.19.1

Selected model: SM-G850F
Selected port: COM3 Z3X BOX Serial Port
Selected port speed: 115200
Checking certificate file… OK
Waiting ADB device…
Please, allow USB debugging on phone… OK
Reading phone info…
Model: SM-G850F
Android version: 4.4.4
Product code: Unknown
Phone version: Unknown
PDA version: G850FXXU2BOA2
CSC version: G850FDRE2BNK2
IMEI: Unknown
Phone S/N: R58FB0XJAAA
Checking Super user right… true
Reading nv data… OK
Checking magic… OK
Running zTool, please wait… OK
Detected new type of security v0
Writing nv data… OK
Rebooting phone… OK
Write CERT done
Done with Samsung Tool v.19.1

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