W00fer on X: "Hey @esc0rtd3w @Mathieulh @PSXPlace @roXyPS3 I have found something interesting. Today I received a new blu-ray movie which requires a software update of the PS3. I'm on 4.81 Rebug
Sony Rolled Out Firmware 4.81 for Its PlayStation 3 Console - Download Now
PS3: Official Rebug 4.81-REX/D-REX with COBRA 7.31 released - Hackinformer
PS3 - 4.89 Update is Live! - Discussions / Details about the firmware update | PSX-Place