hi

hi, one of my working mates tried to unlock a g935f, but in the middle of the process it gave an error and now the phone has s/n but imei 0000000000001, how can i restore its data?
is there a efs or nv backup in the pc?
or is stored with you in server?
where is the work id located of this unlock?

thank you very much indeed
the customer is very angry, please let me know

i already tried to flash same version and other but same outcome.