How To Downgrade PSP 6.61 To 6.60! (Chronoswitch Downgrader) 2017! - YouTube
4 Ways to Upgrade Your PSP Firmware - wikiHow
How To Install 6.61 PRO C2-CFW On PSP Using Android Phone! - YouTube
I bought this PSP 2004 for 25€ in 2015. I've since reshelled it 3 times and installed a 3000 mAh bat. I really love this new blue translucent color! : r/PSP
just sharing 6.61 PRO-C cIPL flashed PSP-1000 and PSP-2000 and 6.61 PRO-C Infinity PSP-3000 : r/PSP
Davee's Infinity CFW - Permanent 6.61 CFW on All 3000 & Go Models! | GBAtemp.net - The Independent Video Game Community
Complete Guide to PSP Custom Firmware | ReviveToday
Disabling VSH Menu on 6.61 PRO-C (Infinity) | GBAtemp.net - The Independent Video Game Community