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First PSP isos files released 
Another step forward in the race to crack open the PSP: Paradox has worked out how to get a dump from a UMD disc, and has released the ISO files for several PSP games (Wipeout: Pure US, Ridge Racers Japanese, and Vampire Chronicles: The Chaos Tower Japanese). 
Also of note, UMD discs use the standard ISO9669 format, so the released ISOs can be burned to regular CDs or DVDs. Know that the games are not yet playable in this format, but it’s a big step forward now that all the reverse engineers out there can get their hands on this stuff.
Download PSP ISO files & ROM Games
PSP isos Wipeout_Pure_USA_PSP-PARADOX
Vampire_Chronicle_The_Chaos_Tower_JAP_PSP-PARADOX
Ridge_Racers_JAP_PSP-PARADOX
Of course you can't play this game yet, and you won't be playing it anytime soon on a burnt umd disc. Sony has already said they wont be releasing burners for UMDs
Free Sony games at PSP roms.com 
Maybe it will give you an idea of what PSP games are like, and just what is hidden on PSP UMD discs. It will give psp developers a chance to look into the files etc used on a UMD. Knowing what files are present and where in the file path they can be found may help with loading of 'driver' files etc from disc.
Utilities and Tools
Sony PSP ISOS File System
UMDs use an iso9660 based filesystem, so this image file can be opened in any iso image browser such as isobuster to look at, extract and generally play with the files within. It could also be burnt to a DVD to let u access the files on your computer such as in windows explorer
To play PSP iso files have to be copied to the games folder on the MS Pro Duo memory card next to the folder where the pictures, videos, movies and downloaded games go. It is the same storage for all the possible downloads for a PSP. Finding a website that offers torrent downloads of PSP game isos is not hard as there are many websites offering PSP iso files due to the high demand of practical and economical games for PSP’s.
There are many ways to download games on to PSP as there are many websites offering free game downloads. There are websites that offer free PSP iso files for all firmware versions and Custom Firmware, as well as free pictures of celebrities, cartoons, sports, logos, themes and other pictures that can be assigned as wall papers. Some fans have even made a ultimate networks for players that provide the best tips and links for finding the best isos. Other links lead to websites that let PSP owners download PSP iso files without the need to register. 
There are many websites that offer free downloads for PSP consoles, homebrew, cheats, patches and a lot more. You can also find helpful forums about games and just about everything about Play Station Portable gaming consoles. Site search engines are great tools when looking to find a particular finding PSP iso file.
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