It doesn't work in most of the games that need 2.00. It isn't that simple. These games need some codecs only available at 2.00 and above. So any version changer will not help. The only reason I use one for is security: If I run a FW upgrade by mistake it will claim that I have a more recent version and stop! I use SXT Version Changer that sets my PSP to think it is 7.50

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