How to Hard Reset on LG P970( LGP970) aka LG Optimus Black? Turn off the phone. Next press and hold the Power key & G button and Volume down key for ten seconds. Release all buttons when the LG logo appears. Your phone will now restart.
Black firmware Linux
The hard reset is completed now. As a result of these actions, the memory of your phone cannot be restored. Sunday, July 27, LG Optimus Black ( P970) Firmware Download This page delivers the latest Official Firmware for your LG Optimus Black ( P970) Smartphone, suitable to both open and subsidized ( SIM locked) handsets.