of PS3Gen (linked above) has discovered something quite interesting with the new PS3 Firmware 2.50. In the new firmware, a "hidden" Restore Menu has been added.
To access it, while the PS3 is in standby, hold the power button like you are doing a reset, but keep holding it down until there are two beeps, and you then can access it.
Now, don't get me wrong, I'm always a fan of any hidden menu, be it in a TV, a PS3, or even a washing machine. However this is more for the technically inept. A video of it is below:
Lets go over the options available. For those who can not read French, from top to bottom:
1. Restart System
2. Restore Default Settings
3. Restore File System
4. Rebuild Database
5. Restore PS3 System
6. System Update
Restart System and System update are quite self explanatory, you can restart the system or upgrade the PS3's firmware. No, downgrading does not work. The Rest of the functions are a tad more interesting, but not too much.
The majority of the functions can be accessed in the XMB, like Restart System, Restore Default System, Restore PS3 System and System Update. But, those few that are not in the XMB are not anything special.