Instructions
Press and hold the "L" button on the top of the PSP with your left pointer finger.
Press and hold the "R" button on the top of the PSP with your right pointer finger. Both fingers should now be holding down the "L" and "R" buttons.
Press the "Start" button with your right thumb. The game should reset if it was manufactured with a "soft reset" option.
Press and hold the "Power" button to power down the PSP. If the game will not reset when the "L," "R," and "Start" buttons are held down, you must completely power down the PSP to reset it. If the game is still frozen and will not power down, remove the battery from the back of the PSP and restart the system.