OFW psp & CFW psp blogs - Firmware 6.39 ME-5 was develop and release by PSP Developer Neur0n who has decided to release his latest PSP Custom Firmware 6.39 ME-5 for users
Yoti on Twitter: "PSP-3000 5.00 M33 to 4.20 OFW https://t.co/stUKRaslkG" / Twitter
Guide] Downgrade your PSP to any 6.xx OFW
Amazon.com: Sony Playstation Portable (PSP) 2000 Series Handheld Gaming Console System (Renewed) (Black) : Video Games
Amazon.com: Sony Playstation Portable (PSP) 2000 Series Handheld Gaming Console System (Pearl Seafoam Green)(Renewed) : Video Games
New to PSP? Got Questions? Then Look Here First for Answers | Exophase Forums
PlayStation Portable Custom Firmware [Mega Thread] - The Tech Game
How to: PSP® CFW and OFW Downgrading - wololo.net/talk
Just got these in the mail for $25 ea from ebay sold as junk. : r/PSP
Updating An Old 6.20 CFW PSP To The Latest 6.61 CFW! - YouTube
Problem on hacking my PSP 2004 | GBAtemp.net - The Independent Video Game Community