PSP: Custom Firmwares for Firmware 6.61 possible - Currently being updated! - Wololo.net
How To Update Any PSP To Official 6.61 In 2018! - YouTube
Sony Updates Its PSP Console with Firmware 6.61 – Download Links Available
4 Ways to Upgrade Your PSP Firmware - wikiHow
Why do so many people prefer 6.60>6.61? : r/PSP
PSP Custom Firmware 6.00-6.61
PSP Custom Firmware Guide For All Models 2022 - pspunk
PSP 6.61 Firmware Update Download
Update to 6.61 Infinity? : r/PSP
PSP Firmware Update 6.61 | GBAtemp.net - The Independent Video Game Community
Risen from the dead: PSP Firmware 6.61 is now available! - Wololo.net
Got my PSP GO Today :) it has custom firmware 6.61 : r/PSP
Got this baby. System version is 6.39. Never been hacked. What should I do to hack it? 6.60 or 6.61? Confirmation button is O. Can I switch it to X with Infinity
Sony Updates Its PSP Console with Firmware 6.61 – Download Links Available