Wireless PSP Custom Firmware installation is now possible! - Wololo.net
Sony Updates Its PSP Console with Firmware 6.61 – Download Links Available
PSP Infinity (100x, 200x, 300x, Street) | GBAtemp.net - The Independent Video Game Community
Music tracks, songs, playlists tagged 6.60 on SoundCloud
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PSP Custom Firmware 6.00-6.61
Infinity 2.0 released for the PSP, allows for persistent CFW on all models of PSPs on 6.60 and 6.61 | GBAtemp.net - The Independent Video Game Community