---
title: "A9LH to B9S"
---
{% include toc title="Table of Contents" %}
### Required Reading
This page is for existing arm9loaderhax users to update their devices to boot9strap.
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.
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/).
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).
{: .notice--warning}
{% 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 List (the [orange Face Icon]({{ "/images/friend-list-icon.png" | absolute_url }}) in the top row of your Home Menu)
+ If you receive an error and are kicked out of the menu, the Friend List setting is either already disabled or your console cannot connect to Nintendo's servers (due to a ban or connection issues)
1. Go to the Friend 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 List
{% endcapture %}
{{ notice-1 | markdownify }}
### 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}
* - **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/AuroraWright/Luma3DS/releases/latest) *(the `.7z` file)*
* The v7.0.5 release of [Luma3DS](https://github.com/AuroraWright/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) *(standard boot9strap; not the `devkit` file, not the `ntr` file)*
* The latest release of [Anemone3DS](https://github.com/astronautlevel2/Anemone3DS/releases/latest) *(the `.cia` file)*
* The latest release of [Checkpoint](https://github.com/FlagBrew/Checkpoint/releases/latest) *(the `.cia` file)*
* The latest release of [Homebrew Launcher Wrapper](https://github.com/mariohackandglitch/homebrew_launcher_dummy/releases/latest)
* The latest release of [GodMode9](https://github.com/d0k3/GodMode9/releases/latest)
* The latest release of [DSP1](https://github.com/zoogie/DSP1/releases/latest)
* The latest release of [FBI](https://github.com/Steveice10/FBI/releases/latest) *(the `.cia` and `.3dsx` files)*
* The latest release of [ctr-no-timeoffset](https://github.com/ihaveamac/ctr-no-timeoffset/releases/latest)
* The latest release of [Luma3DS Updater](https://github.com/KunoichiZ/lumaupdate/releases/latest) *(the `.cia` file)*
* The latest release of [the Homebrew Launcher](https://github.com/fincs/new-hbmenu/releases/latest)
### 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. パソコンにSDカードを入れます
1. Copy `boot.3dsx` to the root of your SD card
1. Create a folder named `3ds` on the root of your SD card if it does not already exist
1. SDカードのルートに`cias`フォルダはない場合、そのフォルダを作成します
1. Copy `ctr-no-timeoffset.3dsx` to the `/3ds/` folder on your SD card
1. Copy `FBI.3dsx` to the `/3ds/` folder on your SD card
1. Copy `Homebrew_Launcher.cia` to the `/cias/` folder on your SD card
1. Copy `lumaupdater.cia` to the `/cias/` folder on your SD card
1. Copy `FBI.cia` to the `/cias/` folder on your SD card
1. Copy `DSP1.cia` to the `/cias/` folder on your SD card
1. Copy `Anemone3DS.cia` to the `/cias/` folder on your SD card
1. Copy `Checkpoint.cia` to the `/cias/` folder on your SD card
1. Copy `boot.firm` from the latest version Luma3DS `.7z` 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 `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. 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 - [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 `.7z` 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. (Start) を押してセーブして再起動します
#### Section IV - Updating the System
If, before following this guide, 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. Update your device by going to System Settings, then "Other Settings", then going all the way to the right and using "System Update"
+ Updates while using B9S + Luma (what you have) are safe
+ エラーが発生すれば、DNS設定を「自動」に変更してください
+ If this still gives you an error, [follow CTRTransfer](ctrtransfer), then try updating again
#### Section V - Homebrew Launcher
1. Launch the Download Play application
1. Press (L) + (Down) + (Select) at the same time to open the Rosalina menu
1. Select "Miscellaneous options"
1. Select "Switch the hb. title to the current app."
1. Press (B) to continue
1. Press (B) to return to the Rosalina main menu
1. Press (B) to exit the Rosalina menu
1. Press (Home), then close Download Play
1. Launch the Download Play application
1. Your device should load the Homebrew Launcher
1. Launch ctr-no-timeoffset from the list of homebrew
1. Press (A) to set the offset to 0
+ This will set the system clock to match the RTC date&time (which we will set soon)
1. Press (Start) to return to the Homebrew Launcher
1. Launch FBI from the list of homebrew
#### Section VI - Installing CIAs
1. Navigate to `SD` -> `cias`
1. 「\」を選択します
1. Select the "Install and delete all CIAs" option, then press (A) to confirm
1. Press (Home), then close Download Play
#### Section VII - DSP Dump
1. Launch the DSP1 application
1. Once it has completed, press (B) to self-delete the app and return to the home menu
#### Section VIII - CTRNAND Luma3DS
1. Power off your device
1. Launch GodMode9 by holding (Start) during boot
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. If you are prompted to fix the RTC date&time, press (A) to do so, then set the date and time, then press (A) to continue
1. Press (Home) to bring up the action menu
1. Select "Scripts..."
1. Select "GM9Megascript"
1. Select "Scripts from Plailect's Guide"
1. Select "Setup Luma3DS to CTRNAND"
1. When prompted, press (A) to proceed
1. Press (A) to unlock SysNAND (lvl2) writing, then input the key combo given
1. (A) で続行します
#### Section IX - Cleanup SD Card
1. Select "Cleanup SD Card"
1. When prompted, press (A) to proceed
1. (A) で続行します
1. Press (B) to return to the main menu
#### Section X - Backup Essential Files
1. Select "Backup Options"
1. Select "SysNAND Backup"
1. (A) を押して確認します
+ This process will take some time
+ If you get an error, make sure that you have at least 1.3GB of free space on your SD card
1. (A) で続行します
1. Press (B) to return to the main menu
1. Select "Exit"
1. Press (A) to relock write permissions if prompted
1. Navigate to `[M:] MEMORY VIRTUAL`
1. Press (A) on `boot9.bin` to select it
1. Select "Copy to 0:/gm9/out"
1. (A) で続行します
1. Press (B) to return to the main menu
1. (R) を押したまま (B) を押してSDカードを取り外します
1. パソコンにSDカードを入れます
1. Copy `__sysnand_###.bin`, `essential.exefs`, and `boot9.bin` from the `/gm9/out/` folder on your SD card to a safe location on your computer
+ Make backups in multiple locations (such as online file storage)
+ These backups will save you from a brick and/or help you recover files from the NAND image if anything goes wrong in the future
1. Delete `__sysnand_###.bin` and `__sysnand_###.bin.sha` from the `/gm9/out/` folder on your SD card after copying it
1. Reinsert your SD card into your device
1. Press (Start) to reboot your device
___
{% capture notice-10 %}
Luma3DS UpdaterでLuma3DSを最新バージョンまで更新できます。そのアプリを起動して (A) を押して更新できます。
これは「本体の更新」と違うことで、ただ最新バージョンのLuma3DSファイルをダウンロードして解凍するだけです。
This will only update the Luma3DS files on your SD card. If you boot your device without an SD card, it will use the version you placed in CTRNAND.
{% endcapture %}
{{ notice-10 | markdownify }}
{% capture notice-6 %}
You will now boot Luma3DS CFW SysNAND by default.
(Select) を押したまま起動すると、Luma3DS設定メニューを開きます。
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).
You can now press (L) + (Down) + (Select) while the system is booted to open the Rosalina menu integrated into Luma3DS. For a full list of Rosalina features, please see the [Luma3DS v8.0 Release](https://github.com/AuroraWright/Luma3DS/releases/tag/v8.0)
{% endcapture %}
{{ notice-6 | markdownify }}
{% capture notice-6 %}
If you would like to upgrade to a bigger sized SD card, all you have to do is format your new SD card as FAT32 and copy paste the contents of the old SD card onto the new SD card.
If your new SD card is bigger than 32GB, then you have to use a different tool to format it, such as [guiformat](http://www.ridgecrop.demon.co.uk/index.htm?guiformat.htm) for Windows, [gparted](http://gparted.org/download.php) for Linux, or [Disk Utility](https://support.apple.com/en-gb/guide/disk-utility/format-a-disk-for-windows-computers-dskutl1010/mac) for Mac.
{% endcapture %}
{{ notice-6 | markdownify }}
To use [NTR CFW](https://github.com/44670/BootNTR/), install [BootNTR Selector](https://gbatemp.net/threads/432911/).
{: .notice--info}
デバイスの地域を別の地域に変更したいなら、[地域を変更する](region-changing) ページをご覧ください。
{: .notice--success}
For information on using GodMode9's various features, check out the [GodMode9 Usage](godmode9-usage) page.
{: .notice--success}
Luma3DSの使い方については、[このwiki](https://github.com/AuroraWright/Luma3DS/wiki/Options-and-usage)をご覧ください。
{: .notice--success}
For information on installing custom themes and splash screens, check out [Theme Plaza](https://themeplaza.eu/).
{: .notice--success}