For me it has a 0% boot rate, it doesn't even crash, it just says "Could not play". I put otherapp.bin and soundhax-usa-o3ds.m4a on the root of my SD card, I checked that the otherapp was of my 3ds's firmware (11.0.0-33u), I do have the starter kit (I've used basehax and menuhax succesfully many times before on the same firmware), any help? Maybe due to my menu's wallpaper?, and yes, I renamed both the otherapp to otherapp and the soundhax-usa-o3ds.m4a to soundhax.m4a