Xiaomi MI4 no network
 

hello to all
i' ve a MI4 with no network , i try to flash any kind roms official developer but same problem .. sim card is recognized .
The problem started from update rom 4.10.31 , stuck in update level to 65% .. this brick solve flashing it in fastboot mode but not more network.
I try this guide UPDATE: How to back up your IMEI for Mi2/2S, Mi3, Mi4, Redmi 1S, Redmi Note LTE - MIUI General - Xiaomi MIUI Official Forum but this work on working EFS but my efs seems to be broken.
any help please ? someone has a back up efs functioning ? my imei number is clear i ceck it to ceckmend service..
thanks

please Any help ? thanks