File:Pair of hacked PSPs with CFW.jpg - Wikimedia Commons
Infinity 2.0 released for the PSP, allows for persistent CFW on all models of PSPs on 6.60 and 6.61 | Page 2 | GBAtemp.net - The Independent Video Game Community
4 Ways to Upgrade Your PSP Firmware - wikiHow
Complete Guide to PSP Custom Firmware | ReviveToday