Instructions
Slide the PSP power slider into the "power" position. The LED should appear green, unless the power adapter is connected.
Navigate to the "Settings" icon. A drop-down menu will appear.
Scroll down to "System Settings" and press "X."
Navigate to "Restore Default Settings." A dialog window will appear, select "Yes." By restoring the system settings to default, your passwords will be reset to "0000." The system will now reset.
Follow the on-screen setup instructions.
Navigate to the "Settings" tab. A drop-down menu will appear. Scroll down to "Security Settings" then press "X."
Select "Change Password." Enter a new password then click "OK."