PSP Custom Firmwares 6.xx ME-2.1 and 6.xx LME-2.1 are now available! - Wololo.net
I want to install Custom Firmware Permanently on My PSP Go. What are the steps? : r/PSP
Installing Custom Firmware on a PSP : 9 Steps - Instructables
6.20 / 6.35 / 6.39 / 6.60 PRO-B10 LCFW released
How to Downgrade PSP Firmware - Nerd Bacon Reviews
I was trying to downgrade my PSP go to 6.20, but it warned me that the [Resume game] feature would be deleted. Does that mean I won't be able to use the
PSP Custom Firmware 6.20 LME-1.9 can now be permanently installed! - Wololo.net
Downgrader (6.31/6.35 to 6.20) Released - Exophase.com
PSP Custom Firmware Guide - Retro Overload
PlayStation Portable - Wikipedia
Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net
6.20 Firmware now available for PSP | Pocket Gamer
PRO Firmware PSP - GameBrew
Installing Custom Firmware on a PSP : 9 Steps - Instructables