Complete Guide to PSP Custom Firmware - Revive Today
4 Ways to Upgrade Your PSP Firmware - wikiHow
Updating The PSP System Software to 6.60 / 6.61 - pspunk
Hack, Install Custom Firmware on Sony PSP-E1004 Street
PSP Official Firmware - Hackinformer
Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net
3 Ways to Hack a PlayStation Portable - wikiHow
PSP: First hacks for the new Firmware 6.61 - PRO CFW & Downgrader updated! - Wololo.net
PSP FAQ - How Do I Update My PSP Firmware?
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
Updating The PSP System Software to 6.60 / 6.61 - pspunk
Fast Recovery Psp 6.60 Pro B9 - truekup
Sony PSP-1000 in GREAT shape w/6.60 Pro-C CFW! inc. Games, Emulators, 4GB card. | #1789310737
PSP 6.60 PRO - B9, B10 CFW installation [Very Easy] (PSP 3000, 2000, 1000 and PSPGo) - YouTube
Update PSP to 6.60 And install PRO-CFW - PnoyGeekster
Sony Updates Its PSP Console with Firmware 6.61 – Download Links Available