Risen from the dead: PSP Firmware 6.61 is now available! - Wololo.net
Latest PSP firmware update includes free T-Mobile WiFi, too | Engadget
Sony Updates Its PSP Console with Firmware 6.61 – Download Links Available
System Update
Fix Corrupted Data and Recover Files from PSP Memory Stick - EaseUS
PSP Firmware Update 6.61 | GBAtemp.net - The Independent Video Game Community
PRO Firmware PSP - GameBrew
PSP Go Released Along with PSP Firmware Version 6.1
PSP Go Sports Beefed-Up Processor
How to Update Your PSP Firmware
Davee's 6.61 Infinity project update - PSP Go
Sony PSP system firmware 2.0 update instructions? - Ask Dave Taylor
Can someone help me update my psp 1001 from 2.80 to 6.61 : r/PSP
PSP firmware update adds NeoGeo, TG-16 folders - GameSpot
How To Update Any PSP To Official 6.61 In 2018! - YouTube
4 Ways to Upgrade Your PSP Firmware - wikiHow
How to Downgrade PSP Firmware - Nerd Bacon Magazine
Install or use custom firmware on any 6.39 PSP [PSP, PSP Slim, PSP 3000, PSP Go] | Digiex
How To Update Your PSP TO 6.61 Official Firmware in 2021 - YouTube
