Default Huawei g610 u20 - invalid imei - after stock firmware

hello to all..

yesterday i bricked my g610 u20 phone just trasferring data.. i connected to pc and i clicked "format" thinking that was SSD card...

today i flashed the phone with stock italian fiwmare

G610-U20 Firmware(V100R001C00B124CUSTC432D001,Italy,Portuga l,Channel-Others,Emotion UI 1.6,05021MHA)

But now my phone say "invalid imei".."null imei" i don't know what to do.. please help