Plug the phone in and allow it to boot up. Once the home screen is displayed, press and hold the 4, 6, 8, and * keys for about three seconds, or until you hear an audio alert and the phone asks you for a password. Enter 456 (default Admin password) and the phone will default itself. If the password has been changed, and 456 does not work, enter the MAC address of the phone as the password. Entering the MAC address of the phone will only reset the Admin password to the default, so it will probably be necessary to repeat this procedure, entering 456 the second time, to factory default the phone.
on Nov 27, 2012