Suggested troubleshooting procedure:
1.- Go to settings > Check your firmware version.
2.- If 4.1 or higher your flashcard could be not compatible (R4s, etc)
3.- Check with an original game
4.- If still not recognized open your DS
5.- Look for continuty in the Slot-1 pins and as well in the swtich that check if the game is inside (are the two contacts solder aside of the slot-1)
6.- If not having continuty or a bended pin your solution will be to desolder the slot-1 and replace with a new one.
Manuel / Montreal
Console Fix Parts