As some people said in the first page, you can already convert a NDS game file to CIA file, and install it. Use make_cia.
What will happen when you launch it, though? Nothing. It won't work if you don't have the game's official card inserted in SLOT-1,
What will happen when you launch it, though? Nothing. It won't work if you don't have the game's official card inserted in SLOT-1,