Für Support auf Englisch, bitte um Hilfe auf dem Nintendo Homebrew Discord.
Wenn du diese Anleitung wertschätzt, akzeptieren wir auch Spenden.

Technische Details (optional)

MSET9 is an exploit for the System Settings application developed by zoogie. It exploits a flaw where the ID1 (the second 32-character folder name inside of the Nintendo 3DS folder, inside of the ID0) can be any name as long as it is 32 characters. Performing a specific sequence of actions results in the console executing the instructions that are encoded into the ID1 folder name, which can be used to grant full control over the 3DS.


This page requires an Android phone/tablet or a Chromebook. If you have a computer running Windows, macOS, or Linux, follow Installing boot9strap (MSET9 CLI) instead. If you do not have access to any of these devices, you will need to use an alternate exploit.

On Android phones/tablets, the minimum Android version required is 6.0 (Marshmallow).

Was du brauchst

  • The following applications installed from the Google Play Store:
  • The latest release of MSET9 (the Release .zip file)


Abschnitt I - Vorbereitungen

In this section, you will prepare the SD card data necessary for the MSET9 exploit to trigger.

  1. Power on your console with your SD card inserted
  2. Open Mii Maker
  3. Wait for your console to reach the “Welcome to Mii Maker” screen, then exit Mii Maker
    • You may see this screen, which indicates the necessary data has been created
    • If you just reach the normal Mii Maker screen, exit Mii Maker and continue to the next step
  4. Power off your console
  5. Insert your SD card into your phone/tablet/computer
  6. Copy everything from the Release .zip to the root of your SD card, overwriting any existing files:

    MSET9 root layout

  7. Run the MSET9 Installer application
  8. Tap on Select "Nintendo 3DS" Folder, then navigate to your Nintendo 3DS folder on your SD card (image)
  9. Once inside the Nintendo 3DS folder, tap on “Use this folder”, then “Allow” if asked (image)
  10. If “Setup MSET9” is highlighted, proceed to the next step. Do not setup MSET9 yet. Close the MSET9 Installer for now
    • If “Check Again” is highlighted, there is a problem that you need to resolve before you can use MSET9. Refer to the troubleshooting
  11. Reinsert your SD card into your console
  12. Power on your console

Section II - MSET9

In this section, you will trigger MSET9 to launch SafeB9SInstaller (the custom firmware installer).

These instructions must be followed EXACTLY, so double-check EVERYTHING you are doing to avoid errors!

  1. Hover over the System Settings icon using the D-Pad (do not select it yet)
  2. Power off, then power on your console
  3. Press (A) to launch System Settings
  4. Navigate to Data Management -> Nintendo 3DS -> Extra Data (image)
  5. Do not press any buttons or touch the screen
  6. With the console STILL ON, and without pressing any buttons or touching the screen, remove your SD card from your console
    • The menu will refresh and say that no SD card is inserted, which is expected
  7. Insert your SD card into your phone/tablet/computer
  8. Open the MSET9 Installer application
  9. Tap “Setup MSET9”
  10. Tap on the photo corresponding to your console model, then on the button corresponding to your current firmware version
    • If the injection was successful, all buttons should become grayed out except for “Remove MSET9”
  11. Reinsert your SD card into your console without pressing any buttons or touching the screen
  12. Wenn der Exploit erfolgreich war, wird SafeBS9Installer gestartet
    • If you get a red screen or the console gets stuck on a loading screen, follow the troubleshooting guide

Schritt III - boot9strap installieren

In this section, you will install custom firmware onto your console.

  1. Wenn du gebeten wirst, eine Tastenkombination einzugeben, gib die Tastenkombination auf dem oberen Bildschirm ein, um boot9strap zu installieren
  2. Once it is complete, press (A) to reboot your console
  3. Deine Konsole sollte in das Luma3DS Konfigurations-Menü gestartet haben
    • Das Luma3DS Konfigurations-Menü enthält Einstellungen für die Luma3DS Custom Firmware. Viele dieser Einstellungen können nützlich für Personalisierung oder Debugging sein
    • Für den Zweck dieser Anleitung lasse alle Optionen auf ihren Standardeinstellungen (aktiviere oder deaktiviere nichts)
    • Wenn sich deine Konsole beim Starten direkt wieder ausschaltet, solltest du sicherstellen, dass du boot.firm aus der Luma3DS zip Datei in das Stammverzeichnis deiner SD-Karte kopiert hast
  4. Drücke (Start) um zu Speichern und neu zu starten

Section IV - Removing MSET9

In this section, you will remove MSET9 to prevent further issues. (This will not remove the custom firmware that you just installed.)

Do NOT skip this section! If you skip it, applications may crash unexpectedly and you will encounter errors on the next page!

  1. Power off your console
  2. Insert your SD card into your phone/tablet/computer
  3. Open the MSET9 Installer application
  4. Tap “Remove MSET9”
  5. Close the MSET9 Installer application

Ab diesem Punkt wird deine Konsole standardmäßig Luma3DS starten.

  • Luma3DS sieht nicht anders aus als das normale HOME-Menü. Wenn deine Konsole in das HOME-Menü gestartet ist, läuft Custom Firmware auf ihr.
  • Auf der nächsten Seite wirst du nützliche Homebrew Apps installieren, um die Installation abzuschließen.

Did you follow Section IV (Removing MSET9)? That section is MANDATORY!

Fortfahren mit Setup fertigstellen