while versions since 2.0 are built independently with additional Direct Show decoders for AAC, MPEG-4 and H.264.The current version of the software is 4.8.2345.0 released on August 22, 2011.
Zune software not updating
Several versions of the software have been released.
Resolves an issue in which the battery of the Zune 80 and upgraded Zune 30 would discharge prematurely due to difficulty entering sleep.
Additional features were added (Zune HD only), Smart DJ, Native AVI and XVID support, Marketplace on TV-Out, Picks on-device, increased performance, browser fixes, favorites sorting, web screenshots, hidden network, no ads on games.
Additions and changes also include the increase spacing of the artist and song titles, the addition of a new section in the tagging system called 'Show Sort'.
Marketplace changes include section headers have been merged in the Windows Phone app section (i.e. Application tiles have been resized as well in both the Zune and Windows Phone sections.
Apps section removed from Marketplace in software (although they are still downloadable directly to Zune HD devices), Zune Social section removed, Mixview disabled, music videos on Marketplace cannot be redownloaded, reactivated or relicensed if user's computer is upgraded and are no longer available for purchase or streaming via Zune Music Pass.Also includes improved device recognition and improved stability and reliability on sync (both wirelessly and while connected to a PC).It has also been noted that the new firmware features the option to unsubscribe from a podcast right on the device.This can be activated by bringing up the menu during a podcast play and selecting “unsubscribe”.This feature was originally slated to be part of the original consumer release of the 2.x firmware (several reviewers described having this option), but it was removed. Also adds new features such as gapless playback, smart playlists, new sorting options, multiple device syncing, and support for XNA (Xbox game developers will be able to load custom code using the XNA platform).Visual changes have been made to Zune Social, making it easier to navigate.