Hello bro ,
First Concentrate with me
you have to flash Full combination rom ( Full) the same security as in phone
Now go to developers mode and enable USB debugging
then flash phone with same firmware was on it before flashing the combination
BUT with 1 file firmware not 4 files , Also remove user data and cache from flashing .
Now your phone will boot-up with adb still enabled and you can use ADB FRP in EFT Dongle to remove google lock
Br,
Ghazwan Eid
EasyTeam