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title: "Instalar boot9strap (kartdlphax)"
---

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<summary><em>Technical Details (optional)</em></summary>

In order to exploit the SAFE_MODE firmware of our system, we need to inject an exploited WiFi profile.

To accomplish this, we can use the Download Play functionality of the game Mario Kart 7, using a 3DS with custom firmware already installed along with a custom game plugin.

This custom plugin will send a hacked payload to an unhacked console, which then exploits the system in order to inject the exploited WiFi profile into your connections list.

Once the WiFi profile has been injected, we will use SAFE_MODE, which is a recovery feature present on all 3DS consoles, to activate the exploited WiFi profile.

For a more technical explanation, see the following links for information on the kartdlphax and unSAFE_MODE exploits: [kartdlphax](https://github.com/PabloMK7/kartdlphax), [unSAFE_MODE](https://github.com/zoogie/unSAFE_MODE/).

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<details>{{ technical_info | markdownify }}</details>
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### Compatibility Notes

Para seguir estas instrucciones, necesitarás lo siguiente:

- Una segunda 3DS con custom firmware (la **3DS de origen**) que sea de la misma región que la 3DS que estás intentando modificar (la **3DS de destino**)
  - The consoles must be USA, JPN, or EUR region consoles
- Una copia física o digital de Mario Kart 7 de la misma región que ambas consolas
- Una tarjeta SD para cada consola

If the (Right/Left Shoulder), (D-Pad Up), or (A) buttons on the **target 3DS** do not work, you will not be able to follow these instructions. For further assistance with this matter, join [Nintendo Homebrew on Discord](https://discord.gg/MWxPgEp) and ask, in English, for help.
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### Qué necesitas

En la **3DS de origen** (la 3DS con custom firmware):

* The latest release of [kartdlphax](https://github.com/PabloMK7/kartdlphax/releases/latest) (`plugin.3gx`)
* The latest release of [Luma3DS 3GX Loader Edition](https://github.com/Nanquitas/Luma3DS/releases/latest) (`boot.firm`)

En la **3DS de destino** (la 3DS que estás intentando modificar):

* The latest release of [SafeB9SInstaller](https://github.com/d0k3/SafeB9SInstaller/releases/download/v0.0.7/SafeB9SInstaller-20170605-122940.zip) (direct download)
* The latest release of [boot9strap](https://github.com/SciresM/boot9strap/releases/download/1.4/boot9strap-1.4.zip) (direct download)
* The latest release of [standard Luma3DS](https://github.com/LumaTeam/Luma3DS/releases/latest) (the Luma3DS `.zip` file)
* The latest release of [unSAFE_MODE](https://github.com/zoogie/unSAFE_MODE/releases/latest) (the RELEASE `.zip` file)

#### Sección I - Preparativos (3DS de origen)

In this section, you will set up your source 3DS (the 3DS with custom firmware) for delivery of the exploit data to the target 3DS.

1. Inserta la tarjeta SD de la **3DS de origen** en tu computadora
1. Copy Luma 3GX Loader Edition's `boot.firm` to the root of the **source 3DS**'s SD card, replacing any existing file
  + La raíz de tu tarjeta SD se refiere al primer directorio de la tarjeta, donde puedes ver la carpeta Nintendo 3DS pero no estás dentro de ella
1. Copia el archivo `plugin.3gx` de kartdlphax al siguiente directorio en la tarjeta SD de la **3DS de origen**, dependiendo de la **región de tu copia de Mario Kart 7**:
  - USA: `luma/plugins/0004000000030800`
  - EUR: `luma/plugins/0004000000030700`
  - JPN: `luma/plugins/0004000000030600`
  - Crea las carpetas `plugins` y `00040000...` si no existen
1. Saca la tarjeta SD de la computadora y ponla en la **3DS de origen**

#### Sección II - Preparativos (3DS de destino)

In this section, you will copy the files needed to trigger the unSAFE_MODE exploit onto your target 3DS (the 3DS that you are trying to modify)'s SD card.

1. Inserta la tarjeta SD de la **3DS de destino** en tu computadora
1. Copia los archivos `boot.firm` y `boot.3dsx` desde el `.zip` de Luma3DS *normal* a la raíz de tu tarjeta SD
1. Crea una carpeta llamada `boot9strap` en la raíz de tu tarjeta SD
1. Copia `boot9strap.firm` y `boot9strap.firm.sha` desde el `.zip` de `boot9strap` a la carpeta `/boot9strap/` en tu tarjeta SD
1. Copia `SafeB9SInstaller.bin` desde el `.zip` de SafeB9SInstaller a la raíz de tu tarjeta SD
1. Copy `usm.bin` from the unSAFE_MODE `.zip` to the root of your SD card
1. Create a folder called `3ds` on the root of your SD card
1. Copy the `slotTool` folder from the unSAFE_MODE `.zip` to the `3ds` folder on your SD card
1. Saca la tarjeta SD de la computadora y ponla en la **3DS de destino**

#### Sección III - kartdlphax

In this section, you will use Download Play to transfer the exploit data from the source 3DS to the target 3DS, which can be used to overwrite your Wi-Fi slots with hacked data. Your Wi-Fi connection settings will be temporarily overwritten while the exploit is active.

1. Enciende la **3DS de origen**
  - Si te le pide que configures Luma3DS, pulsa START para guardar la configuración
1. Once in the HOME Menu, press (Left Shoulder) + (Down D-Pad) + (Select) to bring up the Rosalina menu
1. Selecciona "Enable plugin loader"
1. Presiona (B) para salir del menú de Rosalina
1. Inicia Mario Kart 7
  - Asegúrate de que la conectividad inalámbrica está habilitada
1. Navigate to `Local Multiplayer`. A menu should pop up
  - If the screen freezes, hold the power button for fifteen seconds to force power off your device, then try again
  - If you have launched kartdlphax previously, the last selected settings will be loaded. If they are correct, select `Use settings` and skip the next 3 steps. If they are incorrect, select `Change settings` and proceed.
1. Select your **target 3DS** device type (Old 3DS family or New 3DS family)
1. Select the exploit type `3DS ROP xPloit Injector`
1. A confirmation menu will show up. If the settings shown on the top screen are correct, select `Use settings`
  - If the settings are not correct, press `Change settings` and modify them accordingly
1. Select `Create Group`
  - If the source 3DS freezes at this point and you are using a cartridge, try [installing the cartridge to the system](dumping-titles-and-game-cartridges#installing-a-game-cartridge-directly-to-the-system)
1. Enciende la **3DS de destino**
  - Asegúrate de que la conectividad inalámbrica está habilitada
1. En la **3DS de destino**, abre la aplicación de Modo Descarga (![]({{ "/images/download-play-icon.png" | absolute_url }}){: height="24px" width="24px"}), luego selecciona "Nintendo 3DS"
1. Entra al grupo creado por la **3DS de origen**
1. Selecciona "Start" en la **3DS de origen** una vez detectada la **3DS de destino**
1. Once multiplayer has loaded, navigate to `Grand Prix` -> `50cc` -> (any driver) -> `Mushroom Cup` -> `OK`
1. Espera un rato (se debería mostrar un porcentaje en la **3DS de origen**)
1. If the exploit was successful, the **target 3DS** will have booted into the 3DS ROP xPloit Injector
  - If the exploit was not successful, power off the **source 3DS** and **target 3DS** and start again from the beginning of `Section III - kartdlphax`
1. Press (X) to inject unSAFE_MODE
1. If the injection was successful, the screen will turn green and the **target 3DS** will automatically power off
  + If the screen turns red, power off the target 3DS and start again from the beginning of `Section III - kartdlphax`. If this doesn't work, ask for help at [Nintendo Homebrew on Discord](https://discord.gg/MWxPgEp))

You will **not** need to use your **source 3DS** to complete any further steps on this guide. Any further steps should only be completed on the **target 3DS**.
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#### Section IV - unSAFE_MODE

In this section, you will enter Safe Mode (a feature available on all 3DS family devices) and navigate to a menu where unSAFE_MODE will be triggered, which will launch you into the boot9strap (custom firmware) installer.

1. With your device still powered off, hold the following buttons: (Left Shoulder) + (Right Shoulder) + (D-Pad Up) + (A), and while holding these buttons together, power on your device
  + Keep holding the buttons until the device boots into Safe Mode (a "system update" menu)
  + If you're unable to get into Safe Mode after multiple attempts, one of your buttons may be failing or broken. If this is the case, join [Nintendo Homebrew on Discord](https://discord.gg/MWxPgEp) and ask, in English, for help.
1. Presiona "OK" para aceptar la actualización
  + No hay actualización. Esto es parte del exploit
1. Presiona sobre "Acepto" para aceptar los términos y condiciones
1. The update will eventually fail, with the error code `003-1099`. Este comportamiento es el esperado
1. Cuando se te pregunte "¿Quieres configurar tu conexión a internet?", selecciona "Aceptar"
1. On the following menu, navigate to `Connection 1` -> `Change Settings` -> `Next Page (right arrow)` -> `Proxy Settings` -> `Detailed Setup` ([image](/images/screenshots/bb3/safemode_highlighted.png))
1. Si el exploit ha funcionado, la consola habrá iniciado SafeB9SInstaller

#### Section V - Installing boot9strap

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

1. Cuando se te pida, introduce la combinación de botones mostrada para instalar boot9strap
  + If the top screen is blank, power off your device and re-do Section III
1. Once it is complete, press (A) to reboot your device
1. Your target 3DS should have rebooted into the Luma3DS configuration menu
  + Luma3DS configuration menu are settings for the Luma3DS custom firmware. Many of these settings may be useful for customization or debugging
  + For the purpose of this guide, these settings will be left on default settings
  + If your device shuts down when you try to power it on, ensure that you have copied `boot.firm` from the Luma3DS `.zip` to the root of your SD card
1. Presiona (Start) para guardar y reiniciar

At this point, your console will boot to Luma3DS by default.
  + Luma3DS does not look any different from the normal HOME Menu. If your console has booted into the HOME Menu, it is running custom firmware.
  + On the next page, you will install useful homebrew applications to complete your setup.

#### Section VI - Restoring WiFi Configuration Profiles

In this section, you will enter the Homebrew Launcher so that you can restore the Wi-Fi connection slots that were overwritten in Section III.

1. Inicia la aplicación de Modo Descarga
1. Espera hasta que veas los dos botones
  + Do not press either of the buttons
1. Presiona (Left Shoulder) + (Abajo) + (Select) a la vez para abrir el menú de Rosalina
1. Selecciona "Miscellaneous options"
1. Selecciona "Switch the hb. title to the current app."
1. Presiona (B) para continuar
1. Presiona (B) para regresar al menú principal de Rosalina
1. Presiona (B) para salir del menú de Rosalina
1. Presiona (Home), luego cierra la aplicación de Modo Descarga
1. Relaunch the Download Play application
1. Tu consola debería cargar el Homebrew Launcher
1. Launch slotTool from the list of homebrew
1. Select "RESTORE original wifi slots 1,2,3"
1. Your device will then reboot

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### Continúa en [Finalizar instalación](finalizing-setup)
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