Yes, I've kinda asked this same question before. Old MenuHax setup. Yes, I've deleted the Menuhax stuff but if I try to delete all of the files off the sdcard, so I could install A9LH, it won't boot up after. I couldn't use GodMode9 earlier to transer emuNand so I moved it to a bigger sdcard and still nothing. I just don't know how to undo this process of holding L to boot up or turning my 2ds on without the sdcard in or without files on it.