How to downgrade your PSP Firmware with Chronoswitch - Darthsternie's Firmware Archive
PSP 6.61 Custom Firmware Install on any PSP - PSP, PSP Slim, PSP 3000, PSP Go & E1000 | Digiex
PSP 6.61 Infinity Permanent CFW (LME & PRO) 2018 Tutorial! - YouTube
Sony Updates Its PSP Console with Firmware 6.61 – Download Links Available
PSP: 6.61 Custom Firmware! 6.61 ME & 6.61 LME CFW! - YouTube
Picked up a PSP-1000 on firmware 1.0. Any reason to NOT be on 6.61? : r/PSP
How To Update Any PSP To Official 6.61 In 2018! - YouTube
PSP: Custom Firmwares for Firmware 6.61 possible - Currently being updated! - Wololo.net
PSP 6.61 Infinity Hybrid Firmware by Davee, LME & PRO CFW Patch | PSXHAX - PSXHACKS
PSP 6.61 Infinity PRO Custom Firmware Tutorial! (Permanent CFW) 2018! - YouTube
Sony Updates Its PSP Console with Firmware 6.61 – Download Links Available
PlayStation Guide
PSP Custom Firmware Guide - Retro Overload
Complete Guide to PSP Custom Firmware | ReviveToday
PSP: First hacks for the new Firmware 6.61 - PRO CFW & Downgrader updated! - Wololo.net
Update to 6.61 Infinity? : r/PSP
Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net
Updating The PSP System Software to 6.60 / 6.61 - pspunk
Blue PSP slim 8gb updated with latest 6.61 Pro-c firmware, Video Gaming, Video Game Consoles, Others on Carousell
PlayStation Guide
How To Downgrade PSP 6.61 To 6.60! (Chronoswitch Downgrader) 2017! - YouTube
PSP 6.61 Custom Firmware Install on any PSP - PSP, PSP Slim, PSP 3000, PSP Go & E1000 | Digiex
Do I still need these in my memory stick? I have installed the 661 pro c permanently on my psp. Can I remove them? : r/PSP
Why do so many people prefer 6.60>6.61? : r/PSP
PSP 6.61 PRO-C2 Permanent Custom Firmware - YouTube
PSP 3000 6.61 Infinity "permapatch" - YouTube
How to Mod Any PSP on Firmware 6.61 or Lower! - Infinity 2.0 Permanent CFW - YouTube
PlayStation Guide
