Picked up a PSP-1000 on firmware 1.0. Any reason to NOT be on 6.61? : r/PSP
PSP 1000 black & White 16gb 6.61 Pro CFW – BUY NEARS Market Place
Got this baby. System version is 6.39. Never been hacked. What should I do to hack it? 6.60 or 6.61? Confirmation button is O. Can I switch it to X with Infinity
PSPが約3年半ぶりのアップデート。Ver.6.61で動作安定性向上 - AV Watch
PSP Firmware 6.61 installieren + Custom Firmware 6.61 ME / LME - 2.3 + Plugins | Jailbreak Homebrew Forum MonkeyDesk