Downloaded update packages are cached to disk during the download process. If your network connection is lost during an update download, the next download attempt will resume from where the previous download failed. If an update download was completed, but not applied, the update package will be persisted and ready for the next update attempt.
To specify a preferred folder to download update packages, you can set the PreferredDownloadPath property of the Update Controller prior to downloading the update. You must ensure that the designated folder exists and that the user performing the update has permissions to write to the preferred directory.