LG E900 Optimus 7 hard reset hard reset: With the phone turned off, hold the VOLUME DOWN + UP + CAMERA + POWER buttons.

lg_e900_hard_reset

LG E900 Optimus 7 hard reset full reset

WARNING: All of your data will be lost!

1. Factory Reset.
Go to tap Applications list > Settings > about > reset your phone.

2. Try to update latest SW version via Web.Your
phone are alerted to Windows Phone Updates
automatically by the Windows Phone Update
service, and the updates are installed on the
phone by using the Zune software running on
your personal computer, when you connect your
phone with it.