How to Put Custom Firmware (CFW) on a PSP 3000 « PSP :: WonderHowTo
PSP: First hacks for the new Firmware 6.61 - PRO CFW & Downgrader updated! - Wololo.net
How to Install custom firmware on a PSP « PSP :: WonderHowTo
4 Ways to Upgrade Your PSP Firmware - wikiHow
How to Install recovery LE on a PSP with custom firmware « PSP :: WonderHowTo
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
Officially rejoined the PSP community since my childhood psp broke several years ago : r/PSP