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
Playstation Portable (PSP) softmod - Dreamcast.nu
Free Mobile Gaming - PSP (L)ME Firmware 6.20--2.1, 6.39-10.1, 6.60-2.1: Adds NoDRM To ME Software Download
PSP Official Firmware | ReviveToday
PSX2PSP v1.4.2: How to Convert PSX games to PSP - CDRomance
Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net
Installing Custom Firmware on a PSP : 9 Steps - Instructables
PSP - POPSloader 6.60 PRO (PS1 on PSP) | PSX-Place