PSP Custom Firmware 6.20 LME-1.9 can now be permanently installed! - Wololo.net
Picked up a PSP-1000 on firmware 1.0. Any reason to NOT be on 6.61? : r/PSP
Sony PSP Firmware Update to v6.37 Coming Soon - SlashGear
4 Ways to Upgrade Your PSP Firmware - wikiHow
PSP Firmware Update Cannot be Started - Techyv.com
PSP Firmware 6.35 Now Live, Adds Capability for Unlimited Cloud Music Service via Qriocity - SonyRumors
4 Ways to Upgrade Your PSP Firmware - wikiHow
PSP: First hacks for the new Firmware 6.61 - PRO CFW & Downgrader updated! - Wololo.net
PSP "Bogus" 1.00 Firmware CTF Theme : r/PSP
PSP 6.61 Custom Firmware Install on any PSP - PSP, PSP Slim, PSP 3000, PSP Go & E1000 | Digiex
4 Ways to Upgrade Your PSP Firmware - wikiHow
BLACK Sony PSP 1000 FW 1.00 LOW FIRMWARE - System Only | eBay
Sony Updates Its PSP Console with Firmware 6.61 – Download Links Available
PlayStation Portable homebrew - Wikipedia
PSP 6.61 Custom Firmware Install on any PSP - PSP, PSP Slim, PSP 3000, PSP Go & E1000 | Digiex
How to Update Your PSP Firmware
How to Downgrade PSP Firmware - Nerd Bacon Reviews
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
PSP firmware 5.01 coming soon to fix Memory Stick issues | Engadget
Updating The PSP System Software to 6.60 / 6.61 - pspunk
