So I put the .nds file onto my M3. It creates the save file as it usually does for new games, and then the game begins. After the first few screens of showing the makers of the game, it goes to the screen that says "Touch to Start." I touch the screen, and the screen turns black, while the bottom screen says "cannot find save file, please turn off DS and reinsert the cart," or something along those lines. So I do all of the steps over again and it still does the same thing. I have firmware 1.5 if it works.