@kumikochan
I guess the advantage with the method I am using is that I "officially" updated visibly on Nintendo's servers. And since I made a 5.1 NAND backup after updating (and I restored a clean 4.1 NAND backup before updating, and I've never gone online since that backup was made), I will have no "questionable gaps" in my logs (such as magically updating FW without having a logged "upgrade request" on Nin's servers).
So I MIGHT still be able to be safely go back online (yes, I know the best option for that is STILL to never hack, but for a hacked Switch, this is as safe as it gets, banwise)
[EDIT: actually I'm wrong with the "magically updating" thing since FW updates do come with some carts... but I didn't need a homebrew to update, so my NAND is still "relatively clean" in comparison]
But then OP said they don't care about online, and they've been using SX pro for quite a while, so I guess it isn't applicable here.