The newest wget version 1.19 has an option "--compression=none" to avoid the new feature of automatic decompression........
after editing 40-configure-downloaders.bash (wget_common_options) it worked for this run, but the option is naturally gone after the update
BTW: can you add a delete of the update files before the download, because it doesn't get downloaded from wget again, due to existence of this files in the tmp directory
BTW: i would be great to have an extra add-on option in the preferences to avoid the adding after every update
Thanks
Mani