its slim? well i think its still hackable... doubt they were adding psp3000 to bundle packs... you can still check the net, there is a lot of articles that will tell you what you need to do to be sure your psp isnt the one with beloved "unhackable" mainboard ;]
cheers
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99% its hackable
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btw if the screen dont have scan lines - which is a psp - 3000 hardware feature - its moddable 100% xD