Schritt 1 übersetzen
On the bottom front corners of the cartridge you should see two screws using the 3.8mm "Gamebit" screwdriver bit. A 3.0U Spanner bit can also get them out.
Once the screws are out, slide the front part of the plastic casing down to clear the tabs on the top of the case.
The two halves of the case should open easily.