How To] Downgrade Firmware on PSP Fat/Slim From 6.60 to 6.XX In Less Than 7 Minutes - YouTube
4 Ways to Downgrade a PSP - wikiHow
PSPHACKS 1.03] Downgrading Your Custom Firmware From 6.61 to 6.60 Using Chronoswitch 7.0 - YouTube
I need an expert's advice. I bought this PSP and I want to hack it. The problem is I'm not sure if I can downgrade this firmware since its a permanent csw?
How to Downgrade and Remove PSP Firmware AND Update PSP to Official Firmware! - YouTube
How to Downgrade PSP Firmware - Nerd Bacon Reviews
DOWNGRADE ALL PSP MODELS FROM 6.60 6.38 6.39 6.35 6.20 TO 5.03 6.20 6.35 6.39 *NO PANDORA* - YouTube
How to downgrade your PSP Firmware with Chronoswitch - Darthsternie's Firmware Archive
How can I safely downgrade my Sony PSP firmware? - Ask Dave Taylor
Upgrade – or downgrade – your PSP
4 Ways to Downgrade a PSP - wikiHow
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
How to Downgrade PSP 1000, 2000 and 3000
How To Downgrade your PSP & Upgrade to a Custom Firmware
4 Ways to Downgrade a PSP - wikiHow
How To Downgrade PSP 6.61 To 6.60! (Chronoswitch Downgrader) 2017! - YouTube