In order to resume a download, there are currently far too many steps required to make it very user-friendly, as seen [[https://support.mozilla.org/en-US/questions/1220917#answer-1120120 here]]. There should be a better, integrated way to reliably resume downloads, such as having the reload button next to the file automatically resume the download instead of starting it over. This is especially important for very large files such as ISO's and archives.