This is the safest method for beginners. Octoplus supports LG G8 (models LM-G710, LM-G810, LM-G820, LM-G850).
If your LG G8 shows a missing or invalid IMEI, follow these legal steps instead:
Before attempting any repair, you must understand the root cause. The LG G8 (models LM-G820, LM-G850) stores IMEI data in multiple secure partitions: EFS (Encrypted File System), NV (Non-Volatile) items, and the PERSO partition. lg g8 imei repair
Common causes of IMEI loss:
Crucial Fact: The LG G8 uses the Qualcomm Snapdragon 855 chipset. This is good news, because Qualcomm-based phones have well-documented IMEI repair pathways using Diag Mode and QCN files. This is the safest method for beginners
On PC, run:
adb shell
su
setprop sys.usb.config diag,adb
Now Device Manager shows Qualcomm HS-USB Diagnostics 9091 (COM port). Crucial Fact: The LG G8 uses the Qualcomm
The LG G8 utilizes anti-rollback protection and secure boot. A QCN file from another device will be rejected by the secure bootloader, or it will write successfully but leave you with an IMEI mismatch. Furthermore, writing a donor QCN erases your device's unique RF calibration data (battery optimization, signal tuning), leading to overheating and dropped calls.