You can no longer redeem download codes for new software on 3DS or Wii U.
Find the to redownload games you already own. Understand how to format an SD card for your DS/3DS. download ds games qr code
Navigate to the "Remote Install" menu.
QR codes act as a convenient shortcut for downloading ROMs on your phone , not as a direct “inject to DS” button. You can no longer redeem download codes for