The video explains how to unbrick a fully bricked PSP using a hard modded pandora battery and magic memory stick. This method does NOT need a 2nd custom PSP. Your PSP is fully bricked if it is not powering on/no recovery. You won't need anything else other then a PC (OS must be XP for the MMS creator to work, VISTA doesn't work) a bricked PSP and a 1gb memory stick. In order to create the Magic Memory Stick, you'll want to go here and follow the instructions.