Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net
Is there any way to unbrick a psp without pandora's battery : r/PSP
How to Downgrade PSP Firmware - Nerd Bacon Reviews
VERY EASY) Install Custom Firmware 6.60 PRO B10 PSP 1000, 2000, 3000 + DL - YouTube
Hi guys i have 2 psp PSP 2004 and PSP 3004 i cant update the Blue one to latest firmware 6.61 and i cant find available latest firmware for the 2004 : r/PSP
PSP Firmware Update 6.61 | GBAtemp.net - The Independent Video Game Community