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

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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.

We can do this using an existing exploit, BannerBomb3.

To accomplish this, we use your system's encryption key (movable.sed) to build a DSiWare backup that 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 BannerBomb3 and unSAFE_MODE exploits: [BannerBomb3](https://github.com/zoogie/Bannerbomb3), [unSAFE_MODE](https://github.com/zoogie/unSAFE_MODE/).

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### Compatibility Notes

Estas instrucciones funcionan en consolas de las regiones USA, Europa, Japón y Corea, indicado por las letras U, E, J o K después de la versión del sistema.

If your (Right/Left Shoulder), (D-Pad Up), or (A) buttons do not work, you will need to follow [an alternate branch of Seedminer](installing-boot9strap-(fredtool)). For 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

* 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 [Luma3DS](https://github.com/LumaTeam/Luma3DS/releases/latest) (the Luma3DS `.zip` file)
* [usm.bin](https://github.com/zoogie/unSAFE_MODE/releases/download/v1.3/usm.bin) (direct download)


#### Sección I - Preparativos

In this section, you will copy the files needed to trigger the unSAFE_MODE exploit onto your device's SD card.

1. Your SD card should be inserted in your computer
1. Copy `usm.bin` to the root of your SD card
1. Copia los archivos `boot.firm` y `boot.3dsx` desde el `.zip` de Luma3DS a la raíz de tu tarjeta SD
  + 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. 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

![]({{ "/images/screenshots/usm/usm-root-layout.png" | absolute_url }})
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![]({{ "/images/screenshots/boot9strap-folder.png" | absolute_url }})
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#### Sección II - BannerBomb3

In this section, you will trigger the BannerBomb3 exploit using the DSiWare Management menu, 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. Vuelve a insertar tu tarjeta SD en tu consola
1. Enciende tu consola
1. Entra a Configuración de la consola
1. Navigate to `Data Management` -> `DSiWare`-> `SD Card` ([image](/images/screenshots/bb3/dsiware-management.png))
  + Your device should show the BB3 multihax menu
  + If this step causes your device to crash, [follow this troubleshooting guide](troubleshooting#bannerbomb3)
1. Use the D-Pad to navigate and press the (A) button to select "Install unSAFE_MODE"
  + Tu consola se apagará automáticamente

#### Sección III - 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, you will need to follow [an alternate branch of BannerBomb3](installing-boot9strap-(fredtool)). For assistance with this matter, 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/usm/safemode_highlighted.png))
1. Si el exploit ha funcionado, la consola habrá iniciado SafeB9SInstaller
  + If your device instead shows a red screen, you are missing `usm.bin` from the root of your SD card

#### Section IV - 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. Tu consola debería haber reiniciado en el menú de configuración de Luma3DS
  + 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 V - Restoring WiFi Configuration Profiles

In this section, you will trigger the BannerBomb3 exploit a second time so that you can restore the Wi-Fi connection slots that were overwritten in Section II.

1. Entra a Configuración de la consola
1. Navigate to `Data Management` -> `DSiWare`-> `SD Card` ([image](/images/screenshots/bb3/dsiware-management.png))
1. Use the D-Pad to navigate and press the (A) button to select "Uninstall unSAFE_MODE"
  + Your device will automatically reboot
1. Apaga tu consola
1. Inserta tu tarjeta SD en tu computadora
1. Ve a `Nintendo 3DS` -> `<ID0>` -> `<ID1>` -> `Nintendo DSiWare` en tu tarjeta SD
1. Delete `F00D43D5.bin` from your Nintendo DSiWare folder and from your computer. Este archivo ya no será necesario

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