How to Delete Downloaded DS/DSi Games from a microSD Card

Yes, you can delete them. The method depends on whether the games are legitimate DSiWare/3DS eShop titles or homebrew/flashcart ROMs.

Method 1: On the Console (DSi / 3DS)

1. Go to System Settings → Data Management.
2. Select Nintendo DSi (or Nintendo 3DS) → Software.
3. Find the title → Select Delete → Confirm.

This removes the ticket and save data cleanly.

Method 2: Via PC (Flashcarts / Homebrew ROMs)

1. Eject microSD → Insert into PC reader.
2. Navigate to the folder (e.g., /games/, /nds/, /_nds/).
3. Delete the .nds file and its associated .sav (save) folder.
4. Safely eject → Reinsert into flashcart.

Critical Warning

• Back up saves first! Copy the saves folder to PC before deleting.
• Legit DSiWare/3DS: Deleting via PC corrupts the database; the game icon becomes a "?" and you lose the license. Always use System Settings.
• Flashcarts (R4, Ace3DS, etc.): PC deletion is safe; the kernel rebuilds the list on boot.