Unfortunately there is no official word from Microsoft on this.
In June 2012, Microsoft announced plans to discontinue all "Zune" services; instead Microsoft would distribute its digital media content and services under the Xbox Music and Xbox Video brands available on its line of products including Windows 8 PCs and tablets, Xbox 360 game console, and Windows Phone smart phones.
The net domain now redirects to Xbox's website, but the software retains the Zune name.
Zune is a brand of digital media products and services marketed by Microsoft.
Zune included a line of portable media players, digital media player software for Windows PCs, a music subscription service known as a "Zune Music Pass", music and video streaming services for the Xbox 360 game console via the Zune Software, music, TV and movie sales, and desktop sync software for Windows Phone.
In either version, you get firmware updates for your hardware to increase performance or update certain software features.
With Xbox Live, when you sign in using your Gamertag, you are automatically notified of any new updates. How do you update your Xbox 360 without an Internet connection or a very slow Internet connection?Apparently you can fix the issue yourself and get the Xbox One running again.This possible fix for the Green Screen of Death comes from a user named A.Sauer who posted this possible fix on Amazon’s German based forums.For this fix you will need a file that was uploaded by Microsoft under the name of “Emergency Offline Update” or EOU but quickly took it down for uncertain reasons. Also, make sure it’s formatted as FAT32 and not NTFS.