Originally Posted by KhawOAT
Hello everyone my Galaxy Note3 SM-N900L (Korea) imei lost after I update rom.
Can I just flash original firmware or what should I do with it?
Considering you are on the most difficult Korean model, none of the instructions or files on xda can help you -- different bootloader and radio from everyone else.
You better flash the original firmware. If that doesn't work, you probably need to send the phone to the service center for board change.