easy way to solve it when your psp is turned off take the memery card out load gta up it'll come up with a error, then just continue and the gta will start on a new game then put ur MC back in and go to load your game then once load go and save it this will update the date of the save and make it the first one to boot

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Take your memory stick out, and then stick it back it whenever your in the game. That way you can load whatever you want.

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