Thats right! the catch is you must have the original GTA LCS (unpatched) you can google it or go to pspupdates.qj.net (or pspupdates.qj.net/pda for the ones with slow connection or psp. )
Well it uses the gamesave (exploit) to run codes. apparently Sony didnt patch it up that well so they used it to exploit it again! it was there the whole time. (does this make sense or should i say it in a different way? )