…specifically, hard-drive based PS2 games can now be played.
A PlayStation 3 firmware update is now available for the system, nudging it along from version 1.30 to 1.31.
…
According to this machine translated page, they’ve added “installation of hard disk private PlayStation®2 standard software.” Sure, this doesn’t make any sense but if you think like a machine (follow this link), you’ll realize they surely mean that PS2 software that heretofore required that system’s HDD attachment is now functional. This includes Nobunaga’s Ambition Online and Final Fantasy XI.
(via Joystiq)