I read this, but I dont know how to put those prx files on my psp

Q: So, what's the deal with prx files?...
A: PSP-290 version requires usbacc.prx and usbgps.prx modules to be present in the program's directory. I can't distribute those modules, since they are intelectual property of Sony. There is some evidence that the latest firmwares encrypt the modules in sucj ways that they cannot be used on different PSPs. So your best bet is "extract" the module from the 3.xx firmware update using the appropriate psar dumper (following link has details: http://www.dcemu.co.uk/vbulletin/sho...=49838&page=10)