Once you bypass the lock and set up your LG M400Y:

Work through Method 1 slowly. If it fails, search for a local phone unlocking service with "Octopus Box" support. Under no circumstances should you throw away the LG M400Y—FRP is software, not hardware. It can always be beaten.

For users who have tried the manual methods 20 times with no success, the LG M400Y might have a newer security patch. In this case, you need professional software.

This information is provided for educational purposes only. Bypassing FRP should only be performed on devices you own legally. Circumventing security features on a lost or stolen phone is illegal in many jurisdictions.

A stable Wi-Fi connection and patience.