Guide_3DS/_pages/en_US/a9lh-to-b9s.txt

---
title: "A9LH to B9S"
---

This page is for existing arm9loaderhax users to update their devices to boot9strap.
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All future releases of Luma3DS will only be made in the `.firm` format, which will only be compatible with boot9strap and sighax. This means that to continue receiving the latest updates of Luma3DS, you should use this page to update your installation.
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If you have a PIN enabled on Luma3DS, SafeB9SInstaller will give you an "OTP Crypto Fail" error unless you temporarily disable your PIN (you can re-enable the PIN after the update).
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To use the [magnet](https://en.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)
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{% capture notice-1 %}
There have been reports of a wave of bans being handed out to CFW users by Nintendo. To protect yourself, please do the following steps before starting this guide:

1. Go to System Settings, then "Internet Settings", then "SpotPass", then "Sending of System Information"
1. Disable the "Sending of System Information" option
1. Exit the System Settings
1. Go to your Friend's List (the Face Icon in the top row of your Home Menu)
  + If you receive an error and are kicked out of the menu, the Friend's List setting is already disabled
1. Go to the Friend's List settings, then "Friend Notification Settings", then "Show friends what you're playing"
1. Disable the "Show friends what you're playing" option
1. Exit your Friend's List

{% endcapture %}

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#### 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, 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`.
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* <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%2Ftracker.filetracker.pl%3A8089%2Fannounce&tr=http%3A%2F%2Ftracker.tfile.me%2Fannounce&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969%2Fannounce&tr=udp%3A%2F%2Fexplodie.org%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.yoshi210.com%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.aletorrenty.pl%3A2710%2Fannounce&tr=udp%3A%2F%2F9.rarbg.com%3A2710%2Fannounce&tr=udp%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=http%3A%2F%2Ftracker1.wasabii.com.tw%3A6969%2Fannounce&tr=http%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=http%3A%2F%2Ftracker.aletorrenty.pl%3A2710%2Fannounce&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.tiny-vps.com%3A6969%2Fannounce&tr=http%3A%2F%2Ftracker.baravik.org%3A6970%2Fannounce&tr=udp%3A%2F%2Ftorrent.gresille.org%3A80%2Fannounce&tr=udp%3A%2F%2Fzer0day.ch%3A1337%2Fannounce&tr=http%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=http%3A%2F%2Ftorrent.gresille.org%2Fannounce&tr=http%3A%2F%2Fexplodie.org%3A6969%2Fannounce)
* The latest release of [Luma3DS](https://github.com/AuroraWright/Luma3DS/releases/latest) *(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) *(standard boot9strap; not the `devkit` file, not the `ntr` file)*
* The latest release of [GodMode9](https://github.com/d0k3/GodMode9/releases/latest)
* The latest fork of [Luma3DS Updater](https://github.com/KunoichiZ/lumaupdate/releases/latest)
* The Homebrew [Starter Kit](http://smealum.github.io/ninjhax2/starter.zip)

#### 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 _the contents of_ `starter.zip` to the root of your SD card
1. Copy `boot.firm` from the Luma3DS `.7z` to the root of your SD card
1. Create a folder named `cias` on the root of your SD card if it does not already exist
1. Copy `lumaupdater.cia` to the `/cias/` folder on your SD card
1. Create a folder named `boot9strap` on 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 `GodMode9.firm` from the GodMode9 `.zip` to the `/luma/payloads/` folder on your SD card
1. Copy the `gm9` folder from the GodMode9 `.zip` to the root of your SD card
1. Copy `SafeB9SInstaller.bin` from the SafeB9SInstaller `.zip` to the `/luma/payloads/` folder on your SD card
1. Rename `SafeB9SInstaller.bin` in the `/luma/payloads/` folder on your SD card to `start_SafeB9SInstaller.bin`
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

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

1. Reinsert your SD card into your device

##### Section II - Installing boot9strap

1. Boot your device while holding (Start) to launch the Luma3DS chainloader menu
  + Some versions of Luma3DS will just directly start whichever payload begins with `start_`
  + If your version does this, just proceed with the instructions
1. Launch SafeB9SInstaller by pressing (A) on it
  + 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:621f8af00638cb2b00d5bd0c6816543fa00b5fb1&dn=aeskeydb.bin&tr=udp%3A%2F%2Ftracker.tiny-vps.com%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.aletorrenty.pl%3A2710%2Fannounce&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969%2Fannounce&tr=udp%3A%2F%2Ftorrent.gresille.org%3A80%2Fannounce&tr=http%3A%2F%2Ftorrent.gresille.org%2Fannounce&tr=udp%3A%2F%2Fexplodie.org%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.filetracker.pl%3A8089%2Fannounce&tr=http%3A%2F%2Ftracker.tfile.me%2Fannounce&tr=http%3A%2F%2Ftracker.baravik.org%3A6970%2Fannounce&tr=udp%3A%2F%2Ftracker.yoshi210.com%3A6969%2Fannounce&tr=udp%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=udp%3A%2F%2Fzer0day.ch%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=udp%3A%2F%2F9.rarbg.com%3A2710%2Fannounce&tr=http%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=http%3A%2F%2Fexplodie.org%3A6969%2Fannounce&tr=http%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=http%3A%2F%2Ftracker1.wasabii.com.tw%3A6969%2Fannounce&tr=http%3A%2F%2Ftracker.aletorrenty.pl%3A2710%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 `.7z` to the root of your SD card

##### Section III - Configuring Luma3DS

This section is only needed if you are prompted with the Luma3DS configuration menu after the reboot.
{: .notice--info}

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

##### Section IV - CTRNAND Luma3DS

If, before updating to boot9strap, you already had an EmuNAND setup and would like to move the contents of your previous EmuNAND to your new SysNAND CFW, now is the time to [follow Move EmuNAND](move-emunand) before doing this section.
{: .notice--info}

1. Reboot holding (Start) during boot to launch the Luma3DS chainloader menu
1. Launch GodMode9 by pressing (A)
1. If you are prompted to create an essential files backup, press (A) to do so, then press (A) to continue once it has completed
1. Navigate to `[0:] SDCARD` -> `luma` -> `payloads`
1. Press (X) on `start_SafeB9SInstaller.bin` to delete it
1. Press (A) to confirm
1. Press (B) to return to `[0:] SDCARD`
1. Press (Y) on `boot.firm` to copy it
1. Press (B) to return to the main menu
1. Navigate to `[1:] SYSNAND CTRNAND`
1. Press (Y) to paste a copy of `boot.firm`
1. Select "Copy path(s)"
1. Press (A) to unlock SysNAND (lvl1) writing, then input the key combo given
1. Press (X) on `arm9loaderhax.bin` to delete it
  + If you do not have this file, just proceed with the instructions
1. Press (A) to confirm
1. Press (B) to decline relocking write permissions if prompted
1. Press (B) to return to the main menu
1. Navigate to `[0:] SDCARD`
1. Press (Y) on the `luma` folder to copy it
  + If you have files or folders *other than* the ones from following an earlier version of this guide (`config.bin` and `payloads`) in your `luma` directory (such as LayeredFS files), you should instead just copy `config.bin` and `payloads` by marking them with the (L) trigger, then pressing (Y) to copy
1. Press (B) to return to the main menu
1. Navigate to `[1:] SYSNAND CTRNAND` -> `rw`
1. Press (X) on the existing `luma` folder to delete it
  + If you do not have this folder, just proceed with the instructions
1. Press (A) to confirm
1. Press (Y) to paste a copy of the `luma` folder from your SD card
  + If you only copied `config.bin` and `payloads` earlier, you will need to instead create the `luma` folder manually (hold the (R) trigger and pressing (Y) at the same time, give the name `luma`, then press (A) to confirm), then navigate to `luma`, then press (Y) to paste `config.bin` and `payloads`
1. Press (Start) to reboot

##### Section V - Installing Luma3DS Updater

1. Launch FBI
1. Navigate to `SD` -> `cias`
1. Select `lumaupdater.cia`
1. Select the "Install CIA" option, then press (A) to confirm
1. Press (Home) to exit FBI

___

You can now remove any arm9loaderhax related files from your SD card, such as `arm9loaderhax.bin` on the root of your SD card and the `aeskeydb.bin` file in the `files9` folder on your SD card.
{: .notice--info}

Note that the `.bak` files in the `/boot9strap/` folder on your SD card are only needed in the event of a failed boot9strap install. Once you have installed successfully, you can delete the entire `boot9strap` folder.
{: .notice--info}

This fork of Luma3DS Updater allows for boot9strap compatibility by downloading and extracting the latest Luma3DS `boot.firm` for you.
{: .notice--info}

{% capture notice-6 %}   
You can now hold (Select) on boot to launch the Luma3DS configuration menu.    
You can now hold (Start) on boot to launch the Luma3DS chainloader menu (note that the Luma3DS chainloader menu is only displayed if there is more than one payload detected).    
You can now hold (Start) + (Select) + (X) on boot to dump the ARM11 bootrom (`boot11.bin`), the ARM9 bootrom (`boot9.bin`), and your console unique OTP (`OTP.bin`) to the `/boot9strap/` folder on your SD card (note that this will not have any kind of prompt or message).
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