For the most part, everything is working flawlessly. Xbox Live has the occasional glitch, but it's most likely just Microsoft's servers being bombarded with all the new Xbox One owners.
Also, a tip to anyone trying to use the update: I found it's a lot easier to update it when you have the Xbox...
Got to say, this post was a gargantuan help to me. My Xbox One was DoA with the GSoD. I ran the factory os from the other post first, then ran this update immediately afterwards and have been enjoying Forza 5 since. Thanks for being the only hoster on the internet with this xD
Edit: Yes, I did...