f240k imei repair

Searching for Phone …OK
Preparing Phone on COM63-LGE AndroidNet USB Serial Port
Reading Phone Information …
Build No :
IMEI : 000000000000000
ESN : 00022626
Writing IMEI1… OK
Writing IMEI2… OK

Please Factory Reset Your Phone to complete the operation
HINT: (Go to Settings > General > Backup > Erese/Factory data reset press ‘Reset phone’ and ‘Erase everything’ buttons)
Stopping ADB Service… OK
Operation Time: 00:00:03

but imei is still,,,null,