: This is the specific feature in the FBI homebrew app used to scan QR codes for direct wireless installation of software.

Here is the math:

If you want, tell me which DS game you’re using and I’ll give step‑by‑step QR instructions specific to that title.

Useful search directions (terms to try)

allows players to unlock special characters via codes found on official websites or promotional materials. : In Animal Crossing: New Leaf

However, to a cloud-hosted ROM. That is legal only if you own the physical cartridge and are downloading a personal backup (though copyright law varies by country). In that case, scanning a QR code that reads “https://mycloud.com/pokemon-diamond.nds” would work–but the QR itself doesn’t contain game data.