How to reset BlackBerry Curve 8520 to factory settings.The fastest way to reset your BlackBerry Curve 8520 back to factory settings is to peform a security wipe. it will result in the loss of all user data! It is recommended to perform a backup of the BlackBerry 8520 data. .
How to reset BlackBerry Curve 8520 to factory settings:
Press the BlackBerry key, Go To Options > Security Options > General Settings > Menu > Wipe Handheld > Scroll to Continue, press the Trackpad. it will reset your BlackBerry 8520 quickly.