PlayStation 3

PlayStation 3
Developer: Sony Computer Entertainment Released in JP: November 11, 2006 Released in US: November 17, 2006 Released in EU: March 23, 2007 Released in AU: March 23, 2007 This game has debugging material. This game has revisional differences.

The PlayStation 3 is Sony's third home console that was once thought to be unhackable...

Hidden Firmware Info

Go to Settings -> System Settings -> System Information, hold L1 + R1 + Left + Square, then release them and immediately press and hold Start.

While the branch names and the amount of lines changed throughout the revisions, starting from 4.60 a small amount of branch names were slowly reduced, and by 4.66 they were fully stripped replacing them all with @svn+ssh.

4.65 and older	4.66 and newer

Revisional Differences

In firmware versions before 3.00, the startup screen uses an orchestral tuning sound with the words "Sony Computer Entertainment" on it. This was replaced with a different tune along with a new startup, featuring the "PS" logo and the new "PlayStation 3" logo in firmware 3.00 and above. Also during game boot, in firmware versions before 3.00, you are greeted with a "PlayStation 3" splash screen, featuring the Sam Raimi Spider-Man style font. This was removed in firmware versions after 3.00 and instead boots directly into the game.

Before 3.00	3.00 and newer

OtherOS

To do: Upload some images, maybe a video showing it in action?

Early PlayStation 3 consoles had the option to install other operating systems, such as Linux or FreeBSD. This feature was removed in later models, as well on the supported models running firmware 3.21, released in March 2010.

(Source: PlayStation.Blog)