How to install custom firmware 6.60 on PSP 1000, 2000, 3000 and PSP go - YouTube
How To Install CFW 6.60 Pro B10 - YouTube
PSP 6.60 PRO - B9, B10 CFW installation [Very Easy] (PSP 3000, 2000, 1000 and PSPGo) - YouTube
Infinity 2.0 released for the PSP, allows for persistent CFW on all models of PSPs on 6.60 and 6.61 | Page 3 | GBAtemp.net - The Independent Video Game Community
How to Downgrade Your Custom Firmware From 6.61 to 6.60 Using Chronoswitch 7.0 - YouTube
Update cfw on psp go from pro-b9 to pro-c : r/PSP
Started PSP up after years of storage. Can't update to OFW 6.61, crash then force shutdown. Currently on 6.60 PRO-B9. Any idea what's happening? : r/PSP
How to install 6.60 Pro-B9 CFW for PSP - YouTube
Update from 6.60 PRO-B9 CFW to PRO-C2 on PSP 3000 | PSX-Place
HOW TO INSTALL 6.20 PRO B10 PERMANENT PATCH ON ANY PSP MODEL *NO PANDORA* - YouTube
PSP not connecting to PC (6.60 PRO-B9) : r/PSP
Custom Firmware PRO | PSP.SceneBeta.com
How to Hack/Install 6.60PRO-B9/PRO-B10 Permanent & Semi-Hack (PSP 3000, 2000, 1000 & PSPGo!) 720i HD - YouTube
Update cfw on psp go from pro-b9 to pro-c : r/PSP
CFW Pro B9 is out, adds 6.60 compatibility - Wololo.net
HOW TO: Make and Play PSX Games on ANY PSP 6.60 PRO-B9! - YouTube