Need to update from Cubase 6...

I was just was looking at the download pages… and indeed there is a version 10 Update package. Can this be installed directly over a version 6 installation - or do I have to download and install 7, 8 and 9 first?

If I have to install 4 versions over 6 - is it even advisable? (i.e.: safer and more secure to install 10 from scratch as a separate but FULL install)?

Finally: Does My Steinberg account have a link to the on-line store? Weird - I though it did. (Guess I’m confused with my NI account.)