Hi, i have a junk psp and a nice new psp with 3.11 (puking noise) on it. since the countdown lived up to expectations and proved phony, I would like to take a part out of the junk psp and put it into the new psp to have the old firmware. I know that there has to be a chip containing the firmware, but will it work if i mix and match parts? And which part is it? Ive gotten a lot of info from these forums, thanks everyone.