NOTE2: Even if you suspect your EFS/NV has been corrupted, now is the time to make a backup of all of the relevant partitions for your phone. NOTE1: I have also seen advice that your SIM card should be REMOVED prior to performing the procedure. This step was necessary for me because I did not find any instructions on how to enable the Qualcomm platform diagnostic mode / port on Cyanogenmod ROMs Ensure that you are on one of the LG based ROMs (both V20J and the KK ROM by Paulicat worked for me) Even stranger is the fact that despite having a "0" IMEI, I was always able to make/receive calls and use data on both devices.Ġ. I say this because my second device was never flashed with a custom ROM (only rooted) and remained on stock V20J, yet my IMEI was lost at some random point in time. (The easiest way to make sure that your computer meets this requirement is to connect the modem to the computer and connect to the internet.Restore IMEI after EFS/NV Corruption (0 IMEI, no EFS backup, etc.) - AT&T Optimus G Q&A, Help & Troubleshooting Preface: What the **** is wrong with this device? I've had two phones in a row lose IMEI information for no apparent reason. Make sure that the computer has all the drivers.Now you see the DEVICE UNLOCKED Message on the bottom of the message box.Type it on the SPC and send it to the device.
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