4 Ways to Upgrade Your PSP Firmware - wikiHow
RG351P 3.7 Firmware Update – Improved PSP Performance! – Retro Game Corps
Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net
How to Update Your PSP Firmware
Sony bringing a new PSP model out this year! (Update) – Destructoid
Should I update my PSP-1001 system software? : r/PSP
4 Ways to Upgrade Your PSP Firmware - wikiHow
PSP System Update 6.61 - YouTube
Sony Updates Its PSP Console with Firmware 6.61 – Download Links Available
Updating The PSP System Software to 6.60 / 6.61 - pspunk
How to Update Your PSP Firmware
4 Ways to Upgrade Your PSP Firmware - wikiHow
PSP 6.61 Custom Firmware Install on any PSP - PSP, PSP Slim, PSP 3000, PSP Go & E1000 | Digiex
Sony PSP receives random firmware update - SlashGear
How to Downgrade PSP Firmware - Nerd Bacon Reviews
PSP & PS Vita Owners Shouldn't Update Their PS3 Firmware - News Express US
PSP firmware 3.72 available, doesn't do much ... for now – Destructoid
PSP Go Sports Beefed-Up Processor
Blank Update Screen. Can't update PSP 1K : r/PSP
Sony releases first PSP patch since 2011
PSP: First hacks for the new Firmware 6.61 - PRO CFW & Downgrader updated! - Wololo.net
PSP firmware update adds NeoGeo, TG-16 folders - GameSpot
PSP 6.61 Custom Firmware Install on any PSP - PSP, PSP Slim, PSP 3000, PSP Go & E1000 | Digiex
/cdn.vox-cdn.com/uploads/chorus_image/image/33842413/1200px-PSP-2000.0.jpg "Sony discontinues the PSP in Japan (update) - Polygon")