Hey, I'm mostly a DS guy (I know very little about the PSP), but if there's an obscure game that isn't already in mog123's speedhack database from http://www.pocketheaven.com/boards/viewtopic.php?t=3366 I could attempt to speedhack the game for you. I won't be able to work with most special chip games, but many others I can do. Just let me know.
EDIT: also note that the link posted here:
Is pretty old itself. I too saw that the official link was down, so I asked mog to upload it elsewhere. The new link is on Googlepages and is available from the PocketHeaven thread I linked to.
If you think this snesadvance.dat file prevents a game from booting, you can simply open up the dat file in Notepad, turn off word wrap, and remove the game's entry entirely. You could also try removing the patches one by one (each patch is in the last field after the last pipe symbol, each separated by a comma).
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