This is a tutorial for the retail games. My problem was step2. The game won't recognize his own header. 1. Convert card1 to card2 with this tool: https://filetrip.net/dl?deY8GQks8v 2. Use the Gateway Rom Patcher and use another private header. 3. Copy the game to the sd and start the 3DS 4. Start the game and press Up + X + B to erase the savegame 5. Enjoy!