This is a short human-readable description of the current step in this Downloader's own finite-state-machine workflow -- the flattened, at-a-glance summary UCS Manager keeps directly on the Downloader object rather than in the separate FSM history tables. An admin watching a firmware download that appears stuck can read this field for a plain-text hint of what the download is doing right now, e.g. connecting to the server versus writing the file to local storage, without walking the full DownloaderFsm/DownloaderFsmStage tables. During an SCP transfer this might read something like 'Downloading image' right up until the transfer completes and the description changes to reflect success.