Iode OS wont boot after update 3.5

Still think a nice, bepictured step-by-step and official guide would be the least iodé can do in this situation seeing it’s a pretty big mistake. Again, I installed yesterday. The update was offered up until at least yesterday. A small forum post that the user has to dig out is a bit insufficient not a 100% trustworty.

Edit: see edit in post below (this is getting on my nerves!)