Bricks shouldn't cost upwards of $500, and yet, the Xbox One does. But like a fairy godmother, Microsoft's big day-one patch will magically transform your heaping black box into a full-fledged videogame console, even if you're not connected to Xbox Live!
In all seriousness, most everyone can anticipate that the stress and server load of so many systems trying to update at once will inevitably lead to some issues. For that, Microsoft has drawn up a system that will allow users to update an Xbox One offline.
The Emergency Offline Update (EOU), is not unlike what we saw with the PlayStation 4 update solution, whereby users are allowed to download the patch onto a properly formatted flash drive. There are a few stipulations to this, as not all Xbox Ones will be running the exact same operating system, so for a full breakdown and instructions, check here on Xbox's official support page.
Xbox One will support offline OS updates, here's how to get them [Xbox One Daily]
via destructoid http://www.destructoid.com/here-s-how-to-update-an-offline-xbox-one-266067.phtml