The update is not a download from the website by the user …. you use the utility to update the TimeFactor or other Factor / H9.
I don't have a TimeFactor any more, but the way I used to update was using the Eventide Update Utility:-
You may also use the H9 Control App to update it
if it were me, i would probably download H9 Control and install that and see if you can update it from that first.