Apple TV Software

Apple TV Software was a series of operating systems developed by Apple for their early Apple TV consoles. On October 29, 2015, it was superseded by tvOS.

Version 1
Apple TV Software 1.0 was based on Mac OS X 10.4.7 "Tiger" and released on January 9, 2007 with the 1st-generation Apple TV, which ran on a processor. A computer running a supported version of iTunes was required to sync content to the device.

Version 2
Apple TV Software 2.0 was released in February 2008 and once installed, allowed the 1st generation device to receive downloads directly, effectively untethering it from a computer. Apple TV Software 2.1 was released in July 2008 and allows supported iPhone and iPod touch models to be used as remote control devices through a Remote app. It also added support for MobileMe.

Version 3
Apple TV Software 3.0 was the last major release to be based on Mac OS X. A issue with disappearing content was addressed in an update to version 3.0.1 in November 2009. Version 3.0.2 was the final update to be released in February 2010.

Version 4
Apple TV Software 4.0 was released on September 1, 2010 with the 2nd-generation Apple TV. It the first version to be based on iOS, specifically iOS 4.1.

Version 5
Apple TV Software 5.0 was released in March 7, 2012 with the 3rd-generation Apple TV. Based on iOS 5.1, it featured a new user interface.

Version 6
Apple TV Software 6.2.1, based on iOS 7.1.2, was the last version to support the 2nd-generation Apple TV.

Version 7
Apple TV Software 7.6.2, based on iOS 8.4.6, was the last version to support the 3rd-generation Apple TV.

Deprecation
Though still derived from iOS, the software was formally rebranded as tvOS in 2015, starting with version 9, which was based on iOS 9.