Help can't download the new update?

I have just downloaded the halo forward unto dawn special edition on my xbox but when i tried to go onto the app for xbox it says i need a update so i accept that then it downloads to 62% then goes to 0% thenk back over and over until it decides it cant download? why is this can someone please help.

I have the same problem except when I try to download Halo Waypoint on my Xbox 360 it goes to %61 or %62 the goes to %0 then back again until it says “Cannot Download Halo Waypoint”.