No - One can go from HS to HS2, then HS2 to H5(including HS2)
or
H3 direct to H5 (including HS2). I took this route. It took about a week to get a reply and then Asknet sent me a full boxed H5 - this seems to be the only way they provide the H3-H5 update - no download.
Got H5 up-and-running - looks good. but very complicated as far as I’m concerned - have not tried to import my own samples yet but that’s next on the list to use up another day of my life.