just sharing 6.61 PRO-C cIPL flashed PSP-1000 and PSP-2000 and 6.61 PRO-C Infinity PSP-3000 : r/PSP
PSP Infinity 2.0 Install Guide! (6.61 - 6.60) (WORKING ON EVERY PSP) - YouTube
Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net
PSP 6.61 Infinity Hybrid Firmware by Davee, LME & PRO CFW Patch | PSXHAX - PSXHACKS
PSP - Infinity 2.0 - 6.60 / 6.61 Support + All PSPs models supported + important Bug Fixes | PSX-Place
Update to 6.61 Infinity? : r/PSP
I tried installing 6.61 PRO C2 and infinity v2.0.3 on my psp 3001 (following the instructions on the CFW guide of this subreddit) but it just shows corrupted data when I disconnect,
PSP Firmware 6.61 - CFW users finally excluded from using PSN services?! - Wololo.net
6.61 Infinity – An explanation • lolhax.org
How to install Infinity on 6.61 for LME - Darthsternie's Firmware Archive
UMD drive doesn't work after updating to 6.61 Infinity PRO CFW : r/PSP