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by: JstncasePosted on 2008-08-06 at 10:12:34ID: 22172495
My understanding is that the PSP 1004 is a european model of the PSP.
help-suppo rt/psp/sys tem-softwa re/ detail/ item110833 /Update-fe atures-%28 ver-4-05%2 9/
1. The latest version is 4.05
http://uk.playstation.com/
UK Link for the updated firmware and how to install it from a PC, PSP or a UMD disc.
2. New firmware should always be installed for more complete backwards compatibility of games.