PSP 6.61 Custom Firmware Install on any PSP - PSP, PSP Slim, PSP 3000, PSP Go & E1000 | Digiex
How to hack your PSP on version 6.61 (UPDATED LINKS) - 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 PSP 6.61 To 6.60! (Chronoswitch Downgrader) 2017! - YouTube
How To Mod Any PSP On Firmware 6.61 In The Year [2022] - YouTube
PSP: Chronoswitch 7.0 downgrader released - Wololo.net
PERMANENTLY Trick (CFW) YOUR PSP 6.61! 2018 Tutorial - YouTube
PSP 6.61 Custom Firmware Install on any PSP - PSP, PSP Slim, PSP 3000, PSP Go & E1000 | Digiex
Прошивка PSP 3004 (6.61) на 6.61 PROMOD-C2p / Firmware PSP 3004 (6.61) to 6.61 PROMOD-C2p - YouTube