The PSP Save Cheat

I don't know how many out there of you know about the PSP Game Save Cheat, and that you can use it with Official Firmware. Depending on the game all you need to do is swap out everything that is in the Save folder for that game and swap it out for ones you find on gamefaqs and other sites. That give you everything like access to all the levels, vehicles, whatever. As far as I know there is no one cheat device that will work on all PSP games. But this trick will work on most titles and all you really need is a USB cable for your PSP and that's it.