| Re: how do you play swf files games on psp? Put the PSP game ISO/CSO in (psp drive letter):\ISO
With the PSP on and on the XMB press SELECT and the VSH menu will come up, scroll down to UMD ISO Mode and change(pressing the left or right D pad button) to either the M33 driver or Sony NP9660. Exit out and the games should run from the Games, memorystick menu.
If you still have problems you might try and save everything from the memory stick then format with the PSP's format utility. After that copy everything back to the memory stick.
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