PSP - Infinity 2.0 - 6.60 / 6.61 Support + All PSPs models supported + important Bug Fixes | PSX-Place
Infinity 2.0 released for the PSP, allows for persistent CFW on all models of PSPs on 6.60 and 6.61 | Page 2 | GBAtemp.net - The Independent Video Game Community
PSP 2000 Black Fireware 6.61 32GB Micro SD Card
PSP GO 6.61 Infinity Permanent CFW (PRO) Full Tutorial! 2017! - YouTube
PSP 6.61 Infinity Hybrid Firmware by Davee, LME & PRO CFW Patch | PSXHAX - PSXHACKS
Update to 6.61 Infinity? : r/PSP
Got this baby. System version is 6.39. Never been hacked. What should I do to hack it? 6.60 or 6.61? Confirmation button is O. Can I switch it to X with Infinity
Mandatory PSP Firmware 6.61 Released Today, First in Three Years - Hardcore Gamer
4 Ways to Upgrade Your PSP Firmware - wikiHow
How to downgrade your PSP Firmware with Chronoswitch - Darthsternie's Firmware Archive