UMD drive doesn't work after updating to 6.61 Infinity PRO CFW : r/PSP
Tutorial] Install PSP 6.61 Pro-C Infinity Custom Firmware | GBAtemp.net - The Independent Video Game Community
PlayStation Guide
How To Fix Corrupted PSP 6.61 Infinity Firmware! - YouTube
PlayStation Guide
PSP: Infinity 2.0 – Permanent 6.61 Custom Firmware for every PSP! - YouTube
PSP: Davee's Infinity permanent CFW for PSP 6.61 "pretty much done" (Video) - Wololo.net
INFINITY 2.0 - THE FINAL FEATURE FOR THE PSP : r/PSP
PSP Infinity | ReviveToday
PSP 6.61 Infinity Hybrid Firmware by Davee, LME & PRO CFW Patch | PSXHAX - PSXHACKS
Davee's Infinity CFW - Permanent 6.61 CFW on All 3000 & Go Models! | GBAtemp.net - The Independent Video Game Community
Infinity 2.0 released for the PSP, allows for persistent CFW on all models of PSPs on 6.60 and 6.61 | GBAtemp.net - The Independent Video Game Community
PlayStation Guide
PSP 6.61 Infinity Hybrid Firmware by Davee, LME & PRO CFW Patch | PSXHAX - PSXHACKS
PSP GO 6.61 Infinity Permanent CFW (PRO) Full Tutorial! 2017! - YouTube
Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net