Luma is booting then crashing. You probably need to update it. Place the latest boot.firm and boot.3dsx on your sdcard. You may have updated the 3ds and not remember.
https://github.com/LumaTeam/Luma3DS/releases
I think it just counts as an ELF (executable and linking format) which it is able to handle out of the box. There might be a plugin to organize things better though 😅, not sure .
What godreborn said is that if you pirate it, then after buy it legit, you may run into issues.
Buying it legit the first time will be fine.
Or you could just pirate it and not buy it at all, but that is illegal in most countries.