Instructions
Turn on the PSP by sliding the power switch on the right side of the device upwards.
Push the directional pad to the left to scroll to the "Settings" menu.
Push down on the directional pad to scroll to "System Settings" and press the "X" button.
Push down on the directional pad and stop on the "Restore Default Settings" option. Press the "X" button to select it.
Scroll to the "Yes" option and press the "X" button to initiate the restoration process.