PSP - POPSloader 6.60 PRO (PS1 on PSP) | PSX-Place
PSP Slim (6.60 PRO-C) with UK plug, Video Gaming, Video Game Consoles, PlayStation on Carousell
PSP: First hacks for the new Firmware 6.61 - PRO CFW & Downgrader updated! - Wololo.net
Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net
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