PSP 6.61 Custom Firmware Install on any PSP - PSP, PSP Slim, PSP 3000, PSP Go & E1000 | Digiex
Guide How to UPDATE to Latest Firmware 6.61 For PSP and How to Fix Error Update 9.90 | Guide How to UPDATE to Latest Firmware 6.61 For PSP and How to Fix
Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net