Just download this tool : http://filetrip.net/nds-downloads/rom-hacks/download-retrogamefan-ds-scene-rom-tool-v10-build-1205-f25536.html Steps; 1. Download package (choose right option not the left) and unpack it 2. Run the program DS-SCENE ROM TOOL as admin (if necessary) 3. Let it update itself to the latest (if you see error, then re-do step 2 "run as admin' 4. Go to DATABASE and choose CMP DATABASE, and then CHECK FOR UPDATES 5. Once you had downloaded the latest cheat code database you need, press DATABASE again 6. Press INSTALL TO MEDIA (make sure you had insert your SD Micro to the computer) 7. Choose your SD Micro, and choose location to add the cheat to in the SD Micro 8. Done.