Ok so my original point was that it is currently not possible since no one has done that, and the conclusion after all these posts have been made is that it is currently not possible since no one has done that. WTF guys.
So are you saying you can get a copy of one of the four to install on 11+ (With JUST homebrew on unhacked console) THEN use waithax to gain arm11 to downgrade? Remeber we are talking about 11+ here not 10.7 or 9.2 or having CFW like lumia. Just have to use a "pirate" copy?
They could in theory if we got something higher then 3dsx permissions. We could then use the "any dsiware" method and overwrite something like sudoku with a version 0 but you can't currently do that on homebrew alone. There is also another method without using dsiware but no one has written code...
If you have one of the four you can use waithax, although I see a lot of people with Four Swords not having it work properly. If you don't have any of the four then you can't use it on a unhacked console even though homebrew unless someone figures that out.