It is ideal to have the most stable internet connection when download large files. Using an ethernet cable plugged directly into your computer can dramatically increase download success. Another great way to improve consistency is with a download manager.
A download manager is a computer program dedicated to the task of downloading. Although web browsers may have download managers incorporated as a feature, they are differentiated by the fact that they do not prioritize accurate, complete and unbroken downloads of information. To minimize the risk of download corruption, it is recommended to use a download manager.
Every internet connection and location is different, so we cannot recommend one that is the best, however, in the past we have had success with both Free Download Manager and DownThemAll!. Below is a list of managers for you to try.