You're filling out the path and version with full filenames, which is confusing the download process. It will use the values of those fields to generate the correct filename based on the architecture of the controllers in the cluster.
For path, since you're using TFTP, just use a single dot "." for path.
For version, don't give it a filename, just the version suffix - "8.2.0.2_62929" in your case.