The most frequent cause of a "download failed" error is a slow or unstable Internet connection. There are several different types of updates. Some are smaller in size and can usually be downloaded through a mobile hotspot. Others are larger and require a high-speed Internet connection. Click here for details on the types of updates.
If your Internet connection is strong but the download continues to fail, please contact Technical Support at 877-446-4863. Before calling, open the Dock on your computer and connect your device so that we can resolve your issue more quickly.