for LG E739 ultimate solution
- Before You start everything use your two fingers to tap the back and menu (spring Key) keys or pad
- Press and hold the Volume Down and Power keys.
- After 2 or more seconds phone powers on remove your hand from the power and the volume down keys
- Keep your two fingers on the back and menu (spring Key) pad
- watch the LG LOGO carefully it will blinked
- immediately you see the LG LOGO has blinked, remove your hand from the back and the menu (Spring Key) keys quickly
- Now Wait for your phone to Wiped out