PSP - How to update (and accidentally downgrade / factory reset) the firmware on DTP-T1000 (Plus download links.) | Obscure Gamers
PSP Firmware 6.60 Released » Brewology - PS3 PSP WII XBOX - Homebrew News, Saved Games, Downloads, and More!
How to downgrade your PSP Firmware with Chronoswitch - Darthsternie's Firmware Archive
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
Why do so many people prefer 6.60>6.61? : r/PSP
PSP Firmware Update 6.61 | GBAtemp.net - The Independent Video Game Community
Wololo on Twitter: "So, my kids were playing Astro's Playroom yesterday, and when they unlocked the PSP Go, I told them "We have this thing at home, let me fetch it". I