relatively easy to restore it.
The first thing is to open the device in engineering mode. This is
done with the following code *#*#3646633#*#*
Then swipe to Connectivity and tap CDS Information, then tap on Radio
Information. Then tap on Phone 1.
Then enter AT+ EGMR=1,7,"IMEI" and press SEND AT COMMAND. (Where IMEi is IMEi no of your device)
Make sure there is a space between AT+ and EGMR otherwise you will
get an error. Also dont forget "
Once the command is sent, reboot your device and then check the IMEI
number again by using *#06#.
This method works with all varients of Lenovo A7-30