Xbox One S cannot download or update - zero upload speed
I got my kids an Xbox One S FIFA17 bundle for Xmas. They cannot use it. It will not download the game. I spent many hours online to Xbox support on Xmas Day and Boxing Day and in the end got the unit replaced at their suggestion. but the problem was the same with the new box. Using my iPhone hotspot the game started downloading immediately, but obviously very very slowly.
When checking the internet performance on the Xbox it shows a zero uploading speed. I have a fast connection - typically 100mbps download and 15-20 upload. But for the Xbox only it is zero.
I brought the Xbox to my office and downloaded the software and an update, and the game started playing. Problem solved - I thought!
But as soon as I took it home it said an update was required and of course it would not download the update.
My kids are pretty fed up by now! Any thoughts about this problem?