When you said you tried restarting your Xbone, did you just turn it on and off? Or did you do a hard reset to clear the cache?
Yes, this will not clear the cache. Follow the steps below to clear the cache and see if that allows the update to run.
Here are the steps to clear your Xbox One Cache:
1. Have your Xbox One on
2. Hit and HOLD the Xbox Button on the front of the console for around 10 sec, until it shuts down
3. Once it has powered down, UNPLUG it from the wall for 60 sec
4. Plug it back in and power up the console
