https://3ds.guide/get-started-(old-3ds)
11.4.0 11.5.0 Use an "All Versions" Method
11.6.0 11.6.0 Installing boot9strap (DSiWare)
ALL VERSIONS
ntrboot
(Requires a Compatible Flashcart)
I cannot use the DSiWare method, but i have a compatible Flashcart