I was on a custom rom when I started getting no network so I followed the best method to get to stock by a user (using LG flash tool).
I was successful & got back to as stock as possible, Problem:
the IMEI is showing as unknown, only when SIM is inserted !
WCDMA hidden menu settings change & save when there is no sim but with sim inserted they do not change & IMEI is shown as unknown !
I have searched a lot but no progress!
I read that if any of you give me the stock efs images for efs for a Optimus F240s then I can restore them back.