I was wondering how it was discovered. I mean, it seems to me that it would be nearly impossible to find such a thing. Wouldn't you have to reverse engineer the savegame format AND the part of the game that parses the savegame format? That's a lot of binary and assembler to sort through. Or was it simply found by fuzzing?
...in case you can't tell, I'm a wannabe PSP :o I really don't know where to begin. I have a (probably unfounded) suspicion about another PSP game, but that's a topic for a different thread.