11.4 and 11.5 users can update to 11.6, then do the "dsiware transfer" part of 3ds.guide to get cfw. The only drawback is..you'll need $2 for the DSiWare title and another 2ds, 3ds, or New 3ds/2ds xl that has been cfw'd for the method to work. https://3ds.guide/installing-boot9strap-(dsiware-game-injection)