Damn man, I just updated while I get up my knowledge on the whole PSP hacking thing. Then when they come out with a 100% working downgrader for my Version, I will begin doing this stuff.
Anyways, sorry man, if I knew anything that could help you, I would help you fix this problem.
I used to know a place, where you could buy like broken PSP's and get parts for all game consoles, with a working chip inside and stuff. That is how I got another Optical Drive for my PS2, since my first one broke.
But I will look it up, all the stuff is cheeaaap, and it tells you what is wrong with the item you want to buy and everything. :D