Make sure you turned off your device. Hold down the listed keys: the Power key, the Volume down key, the Menu button, and the Back button. Wait...
Turn off the phone and hold down the Power button or the Lock key and the Volume down key for ten seconds. Now your phone will power on. Excellent!...
Switch off the phone, then hold down the Power key & the Home button, and the Volume down key. Release only the Power key when the LG logo appears...
Turn off the phone. Press and hold the Power key and the Volume down key. Release the Power key when the LG logo appears, then immediately...
Switch off the device and hold down the Power key and the Volume up key. Wait until the "MMI Test" appears and then release all buttons. Here...
Switch off the device. Hold down the listed keys: the Power or Lock key, the Volume down key, the QWERTY F key, and the Qwerty A. Your device...