LG Mobile Flash Tool Download: The Ultimate Guide to Flashing LG Firmware
Click , select your country and language, and hit OK . Do not touch the cable or the phone until the tool says 100% and the device reboots. Troubleshooting Common Issues
If the tool doesn't see your phone, reinstall the LG USB drivers and try a different USB port (preferably a USB 2.0 port).
CDMA (Don't worry, this works for most GSM models too). PhoneMode: DIAG.
Your computer won't recognize the phone in Download Mode without these.
This is common. Often, the phone has finished flashing but the tool hasn't updated. If the phone reboots to the home screen, you are safe to disconnect.