---
title: "D'A9LH a B9S"
---

{% include toc title="Table of Contents" %}

### Required Reading

Aquesta pàgina és per a usuaris actuals d'arm9loaderhax que desitgin actualitzar els seus dispositius a boot9strap.

Totes les futures versions de Luma3DS és faran exclusivament en el format `.firm`, el qual només serà compatible amb boot9strap i sighax. Això vol dir que per a continuar rebent les darreres actualitzacions de Luma3DS, hauríeu d'utilitzar aquesta pàgina per actualitzar la vostra instal·lació.

To use the [magnet](https://wikipedia.org/wiki/Magnet_URI_scheme) links on this page, you will need a torrent client like [Deluge](http://dev.deluge-torrent.org/wiki/Download).

To extract the `.7z` files linked on this page, you will need a file archiver like [7-Zip](http://www.7-zip.org/) or [The Unarchiver](https://theunarchiver.com/).

While we believe that custom firmware is safe for online use, there have been online network bans in the past, primarily for cheating and suspicious eShop behavior.
{: .notice--warning}

### What You Need

Note that the following required file named `secret_sector.bin` is the same one that was found in the various `data_input.zip` file versions. If you already have that file on your disk somewhere, you can use that one instead of downloading the one below.
{: .notice--info}

Note that, only on New 3DS, `secret_sector.bin` is needed to revert the arm9loaderhax exploit, which is why it is not needed for the installation of boot9strap on a stock console. If you do not have a New 3DS, you do not need `secret_sector.bin`.
{: .notice--info}

* <i class="fa fa-magnet" aria-hidden="true" title="This is a magnet link. Use a torrent client to download the file."></i> - **New 3DS Users Only:** [secret_sector.bin](magnet:?xt=urn:btih:15a3c97acf17d67af98ae8657cc66820cc58f655&dn=secret_sector.bin&tr=udp%3A%2F%2F9.rarbg.to%3A2710%2Fannounce&tr=udp%3A%2F%2Fbt.xxx-tracker.com%3A2710%2Fannounce&tr=udp%3A%2F%2Fexodus.desync.com%3A6969%2Fannounce&tr=udp%3A%2F%2Fmgtracker.org%3A6969%2Fannounce&tr=udp%3A%2F%2Fopen.demonii.si%3A1337%2Fannounce&tr=udp%3A%2F%2Fpublic.popcorn-tracker.org%3A6969%2Fannounce&tr=udp%3A%2F%2Fthetracker.org%3A80%2Fannounce&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.cypherpunks.ru%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.ds.is%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.internetwarriors.net%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.mg64.net%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.open-internet.nl%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.port443.xyz%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.qt.is%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.tiny-vps.com%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.torrent.eu.org%3A451%2Fannounce&tr=udp%3A%2F%2Ftracker.vanitycore.co%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker-2.msm8916.com%3A6969%2Fannounce)
* The latest release of [Luma3DS](https://github.com/LumaTeam/Luma3DS/releases/latest) 
* The v7.0.5 release of [Luma3DS](https://github.com/LumaTeam/Luma3DS/releases/tag/v7.0.5) *(the `.7z` file)*
* The latest release of [SafeB9SInstaller](https://github.com/d0k3/SafeB9SInstaller/releases/latest)
* The latest release of [boot9strap](https://github.com/SciresM/boot9strap/releases/latest) *(`boot9strap-1.3.zip`; not the `devkit` file, not the `ntr` file)*

### Instructions

#### Section I - Prep Work

For all steps in this section, overwrite any existing files on your SD card.
{: .notice--info}

1. Power off your device
1. Insert your SD card into your computer
1. Copy `boot.firm` and `boot.3dsx` from the latest version Luma3DS `.zip` to the root of your SD card
1. Copy `arm9loaderhax.bin` from the v7.0.5 Luma3DS `.7z` to the root of your SD card
1. Delete any existing `.bin` payloads in the `/luma/payloads/` folder on your SD card as they will not be compatible with boot9strap compatible Luma3DS versions
1. Copy `SafeB9SInstaller.bin` from the SafeB9SInstaller `.zip` to the `/luma/payloads/` folder on your SD card
1. Create a folder named `boot9strap` on the root of your SD card
1. Copy `boot9strap.firm` and `boot9strap.firm.sha` from the boot9strap `.zip` to the `/boot9strap/` folder on your SD card
1. **New 3DS Users Only:** Copy `secret_sector.bin` to the `/boot9strap/` folder on your SD card

    ![]({{ "/images/screenshots/a9lh-to-b9s-file-layout.png" | absolute_url }})
    {: .notice--info}

1. Reinsert your SD card into your device

#### Section II - Installing boot9strap

1. Boot your device while holding (Start) to launch SafeB9SInstaller
  + If you see the luma configuration screen instead of SafeB9SInstaller, simply press (Start), then shutdown your 3DS and try again
  + If this gives you an error, try either using a new SD card, or formatting your current SD card (backup existing files first)
1. Wait for all safety checks to complete
  + If you get an "OTP Crypto Fail" error, download <i class="fa fa-magnet" aria-hidden="true" title="This is a magnet link. Use a torrent client to download the file."></i> - [aeskeydb.bin](magnet:?xt=urn:btih:d25dab06a7e127922d70ddaa4fe896709dc99a1e&dn=aeskeydb.bin&tr=udp%3A%2F%2F9.rarbg.to%3A2710%2Fannounce&tr=udp%3A%2F%2Fbt.xxx-tracker.com%3A2710%2Fannounce&tr=udp%3A%2F%2Fexodus.desync.com%3A6969%2Fannounce&tr=udp%3A%2F%2Fmgtracker.org%3A6969%2Fannounce&tr=udp%3A%2F%2Fopen.demonii.si%3A1337%2Fannounce&tr=udp%3A%2F%2Fpublic.popcorn-tracker.org%3A6969%2Fannounce&tr=udp%3A%2F%2Fthetracker.org%3A80%2Fannounce&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.cypherpunks.ru%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.ds.is%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.internetwarriors.net%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.mg64.net%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.open-internet.nl%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.port443.xyz%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.qt.is%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.tiny-vps.com%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.torrent.eu.org%3A451%2Fannounce&tr=udp%3A%2F%2Ftracker.vanitycore.co%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker-2.msm8916.com%3A6969%2Fannounce), then put it in the `/boot9strap/` folder on your SD card and try again
1. When prompted, input the key combo given to install boot9strap
1. Once it has completed, press (A) to reboot your device.
  + If your device shuts down on boot, ensure that you have copied `boot.firm` from the Luma3DS `.zip` to the root of your SD card

#### Section III - Configuring Luma3DS

1. In the Luma3DS configuration menu, use the (A) button and the D-Pad to turn on the following:    
  + **"Show NAND or user string in System Settings"**
1. Press (Start) to save and reboot

___

### Continue to [Finalizing Setup](finalizing-setup)
{: .notice--primary}