Instructions
Place your PSP face up on a sturdy surface such as a desk or table.
Press and hold down the "R" button on the PSP. The "R" button is the rectangular button on the top right corner of the unit.
Press the "Start" button while simultaneously holding the "R" button down. The "Start" button is located on the bottom right side of the PSP.
Wait for the unit to power on. When it does, it will be in recovery mode.