Sony PlayStation Portable Secrets (Fat, Slim, Brite, and Go)
Picked up a PSP-1000 on firmware 1.0. Any reason to NOT be on 6.61? : r/PSP
PSP 1000: Running Firmware 1.00 at different Motherboards - YouTube
Sony PSP 1004 1000 Series Black Handheld Console + 4 Games & Box NO BATTERY | eBay
PlayStation Guide
HELP Downgrading psp official firmware from 3.50 to 1.50 | GBAtemp.net - The Independent Video Game Community
Mathieu Hervais on Twitter: "PSP Development kit running the vanilla 1.0.2 (pre 1.00) firmware. The vsh (xmb) menu is completely hidden, you can restore it by flashing 1.00's pspbtcnf.txt file to flash0
PSP "Bogus" 1.00 Firmware CTF Theme : r/PSP
Is this PSP hackable or... ? | GBAtemp.net - The Independent Video Game Community
PSP "Bogus" 1.00 Firmware CTF Theme : r/PSP
PSP Network Utility (Chinese Version 1.00C) : Sony Computer Entertainment Korea : Free Download, Borrow, and Streaming : Internet Archive
PlayStation Portable system software - Simple English Wikipedia, the free encyclopedia
How To Downgrade your PSP & Upgrade to a Custom Firmware
PSP - How to update (and accidentally downgrade / factory reset) the firmware on DTP-T1000 (Plus download links.) | Obscure Gamers
pspmultifirmwaremod - 0okm0000
PSP Release: Despertar Del Cementerio 9.01 (PSP unbricker) - Wololo.net
Proto:PlayStation Portable - The Cutting Room Floor
Black Sony PSP 1000 Fw 1.00 firmware Baixo-somente sistema | eBay
PSP - How to update (and accidentally downgrade / factory reset) the firmware on DTP-T1000 (Plus download links.) | Obscure Gamers