<
Turn off your LG Hub. Press and hold both Volume down + HOME + POWER s together to get into android recovery menu. Select wipe data / factory reset with Volume . All data will be lost!
To reset your LG Optimus Hub phone to factory settings and erase all the data on your phone, touch Menu > Settings> Privacy > Factory data reset > Reset phone.
or
You can use LG Mobile Support tool to repair your LG cell phone, after download select menu Customer Support > Recovery Phone
LG E510 reset via menu
