PSP: First hacks for the new Firmware 6.61 - PRO CFW & Downgrader updated! - Wololo.net
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
Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net
How To Update Any PSP To Official 6.61 In 2018! - YouTube
Got my PSP GO Today :) it has custom firmware 6.61 : r/PSP
Tutorial] Install PSP 6.61 Pro-C Infinity Custom Firmware | GBAtemp.net - The Independent Video Game Community
Easy Method - PSP How to install PSP 6.61 Pro C2 and if not showing games list on your psp but first download the file�- http://youtu.be/w4xFduw8cdw 6.61 Pro C2 Download- http://www.mediafire.com/?zd268rwbc5sui2e/ DarkSpeed
4 Ways to Upgrade Your PSP Firmware - wikiHow
Updating The PSP System Software to 6.60 / 6.61 - pspunk