I'm pretty sure it always defaults to the default (
). However, you can edit and save the default to be whatever you like.
In my case, I selected the default patch, preloaded a selection of pedals and rack effects I tend to use most, greyed everything out, and then hit save or edit or whatever. So that's what comes up at start up now. Everything is greyed out so I have the sense of a blank patch I'm assembling from scratch, but my essentials are there, ready to go. Pick the amp I want to use and I'm good.
In your case, I think you might have to select the default patch, recreate your favorite setting and edit the default, rather than picking your favorite and making that the default. Try it and see what happens.