PSP: First hacks for the new Firmware 6.61 - PRO CFW & Downgrader updated! - Wololo.net
How to Permanently Mod EVERY PSP in 2021 - Install/Update INFINITY 2.0 & 6.61 PRO-C2 Custom Firmware
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
How to Hack Any PSP All Firmwares Supported, All Models Supported - Infinity 2.0 Permanent CFW : r/Roms
How to Mod Any PSP on Firmware 6.61 or Lower! - Infinity 2.0 Permanent CFW - The GamePad Gamer
PSP 6.61 Infinity Hybrid Firmware by Davee, LME & PRO CFW Patch | PSXHAX - PSXHACKS
PSP 3000 6.61 Infinity "permapatch" - YouTube
PSP Custom Firmware Guide For All Models 2022 - pspunk