- Install Android 5.0.1 (LWX48P) on your LG G Watch. Pair it with a phone.
- Enable developer mode
- Go to Settings ➔ About and tap on "Build Number" about 10 times. You should see a toast message pop up telling you that you are now a developer.
- Go back to Settings. A new "Developer options" menu should appear below About. Enter that and enable "ADB debugging".
- Plug your watch into your computer (using the dock). On the phone, a dialog should appear confirming whether you want to trust your computer for debugging. Check the "remember this device" box and press OK.
- Use
adb reboot bootloader
to enter the bootloader - Use
fastboot oem unlock
to unlock the bootloader (only needs to be done once) - this will wipe the device - Use
fastboot flash boot boot-new.img
to flash the new boot image.
Rooting the device is not required. If you ever want to go back to the stock image, flash boot-orig.img
.