PSP: 6.61 Infinity - Davee's 'Permanent Patch' for System Software 6.61 - Wololo.net
Sony PSP Go Console Black Version 6.61 + Memory + 5 Games + USB Charger | eBay
Davee's 6.61 Infinity project update - PSP Go
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