My model is the E988 from Taiwan.
Basically, I was using my phone this morning and it was fine but when I turned it on in the afternoon it couldn't get any network connection. About an hour later, I could get voice and text connection but no 3g. I then rebooted my phone and can't get any connection again. I looked in the settings and on the IMEI and IMEI SV it says unknown.
Fortunately, I had an EFS backup from a few months ago that I made with the Freegee app. However, I have since returned to stock and then only rooted it. I have not disable LGE security or installed a custom recovery. I tried to recover the EFS using the Freegee app but it didn't work. It said it was successful but the IMEi and IMEI SV still say unknown.
Does anyone know what my problem is? Do I need to have a custom recovery to restore my EFS using this app? I also have a baseband file that I made myself. Could it be fixed by installing this baseband file?
Also, I'm wondering why my phone randomly started working after an hour. Surely if the IMEI is corrupted it shouldn't work at all???