I was trying out some ROMs which I downloaded from needrom.com. At first it was fine. Then when I flashed a particular ROM, I started getting "INVALID IMEI" and could not connect to the network anymore.
Luckily I had a full backup of the phone taken with TWRP. I could not see my backup listed in the TWRP that came with the present ROM. So I flashed the Recovery with which I backed up the phone. Then I could see the Backups listed.
When I tried to restore it, it failed with this error:
Unable to mount '/data'
I guess the partitioning changed. Anyways, I could restore 'Nvram' alone and the
INVALID IMEI got replaced by "EMERGENCY CALLS ONLY".
How do I fix this? Can I somehow restore the backup (by fixing Unable to mount
ROM that was working and running currently: http://www.needrom.com/download/ultralight/ ROM that started the trouble: P780_S228_8GB_KK_ROW
Phone: Lenovo P780 8GB.