Hello.
We think usualy that Mac can't run webupdater with manuel file.
In the Webupdater package, there is the application, and if we launch manualy with the Terminal, we can see options :
/unit ID=<unit_id>
The device having specified Unit ID should be selected for
processing. If only /unit flag is provided then it opens Web-
Updater user interface with device having provided unit ID
selected. Parameter "ID" is always required with /unit flag. ...