imei loss and it was showing invalid

[raj4c9]

Hai my mobile lenovo a7000
iam reinstalled android os with flash tools and i installed succesfully but IMEI showing invalid
i tried with imei sn write tool in was showing meta mode fail
how can i get my imei
please help me
thanking you

 

[ccampy]

Changing or editing an imei number on a phone is illegal in most countries so we can't help you

 

[hang-the-9]

Contact your service provider or restore the device with the Android version it came with.