I still have that crap, Gateway's only good thing is Gateshark.
A doubt at the time of performing the formatting procedure gives emunand9 the 3DS will not stall for having deleted the A9LH files.
For me the only thing missing is Luma and a plugin to add cheat codes.
But it is an impossible dream.
Emunand making and SD card formatting doesn't remove A9LH, besides when you copy back the SD card contents to the SD card, it will have the payloads and stuff.