PSP DOWNGRADE TO ANY FIRMWARE | PSP | JURAMEEHS - YouTube
HOW TO INSTALL 6.20 PRO B10 PERMANENT PATCH ON ANY PSP MODEL *NO PANDORA* - YouTube
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
Hack PSP 6.20/6.35/6.39 (Permanently) with PRO-B9 [Tutorial] - YouTube
6-60 6-39 6-38 Downgrader PSP - GameBrew
How to downgrade your PSP Firmware with Chronoswitch - Darthsternie's Firmware Archive