Thanks, Fellfrosch, that's very nice of you

I followed the Windows instructions here: https://jolla.com/sailfishx-windows-instructions/

In retrospect, I think my biggest problem was that I prefer to know what I am doing, which was not always the case here. The instructions are not written in a consistent style, they are a weird mix of "expert" and "trained monkey" level. A trained monkey does not need to understand, just follow steps. An expert does not need explanations because (s)he knows it all. I was lost somewhere in between

For example, I still do not know "vendor binary images" are and why do I need them. I mean, I am replacing a vendor's binary image (Android) with my own (Sailfish), am I not? So why on earth do I need this? But I guess I do not really need to know that. It's just a black box that I need for some reason. I could do the whole thing again in no time at all if I had to.