[Q] bad IMEI after flashing roms
after playing around unnecessarily with roms it seems I messed up my IMEI.
by checking if IMEI is valid via dialer, i got a number which starts with 0049, which as I understand is bad. I have done a little reading on ESF backup and restore, but the ways to restore EFS always require backup from the same apllication...So I searched for a backed that maybe occoured automatically, so I found one in the root internal storage folder and discovered a folder named "esf_backup", probably created during rom installations, the question is can i restore the tar.gz file in this folder? Or has my phone been messed up way beyond repair?