Thanks everybody for your attempts to help, really appreciated.
I have already done my evaluations, and my conclusion is that I just have to replace my 20yrs old mini-tower dinosaur with Windows XP.
I said it's not going to happen soon because I know I'm slow in this kind of decisions; for example I am thinking to move to the other side of the Force.
Another reason for my slowness in this decision is that I am obsessively spending my time thinking at how to setup my new pedalboard, and the related role of the HXS with the functionality provided by later FWs... so, I am in a sort of nested loop, programmer-wise speaking, hi hi.
Oh, and by the way, it is really a shame that HX Edit and FW updates are not supported on smartphones or tablets.