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PlayStation.Blog » PSP (PlayStation Portable) v5.01 Update
I4U News found this 10/22/2008 on blog.us.playstation.com
FeaturePreacher | October 21st, 2008 at 7:32 pm @Eric or any other firmware developers Don’t fear redesigning the in-game xmb to reduce the amount of memory it uses in order to allow for in-game access to music for all ps3 games, cross game invites, and persistent voice chat for ps3 games. I ...