To boot in recovery mode on a LG G2, you need to do the following steps:
- Power off your phone. Don’t just restart, but perform a normal power off
- Wait for a few seconds
- Press <Volume Down> and <Power> buttons simultaneously until the LG logo is shown
- Press <Volume Down> and <Power> buttons simultaneously again until you get the firmware reset screen
- Press the <Power> button again to start the reset
This is useful when you want to flash a firmware via e.g. TWRP.
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