---
title: "A9LH to B9S"
---
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://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)
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'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 %}
{{ 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%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)
* [`setup_ctrnand_luma3ds.gm9`]({{ base_path }}/gm9_scripts/setup_ctrnand_luma3ds.gm9)
* [`cleanup_sd_card.gm9`]({{ base_path }}/gm9_scripts/cleanup_sd_card.gm9)
#### 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 `setup_ctrnand_luma3ds.gm9` to the `/gm9/scripts/` folder on your SD card
1. Copy `cleanup_sd_card.gm9` to the `/gm9/scripts/` folder on 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
{: .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 - [`aeskeydb.bin`](magnet:?xt=urn:btih:d25dab06a7e127922d70ddaa4fe896709dc99a1e&dn=aeskeydb.bin&tr=udp%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=udp%3A%2F%2Fexplodie.org%3A6969%2Fannounce&tr=http%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=udp%3A%2F%2Fzer0day.ch%3A1337%2Fannounce&tr=udp%3A%2F%2Ftorrent.gresille.org%3A80%2Fannounce&tr=http%3A%2F%2Ftracker1.wasabii.com.tw%3A6969%2Fannounce&tr=http%3A%2F%2Ftorrent.gresille.org%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%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.aletorrenty.pl%3A2710%2Fannounce&tr=udp%3A%2F%2Ftracker.filetracker.pl%3A8089%2Fannounce&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969%2Fannounce&tr=http%3A%2F%2Fexplodie.org%3A6969%2Fannounce&tr=http%3A%2F%2Ftracker.tfile.me%2Fannounce&tr=http%3A%2F%2Ftracker.baravik.org%3A6970%2Fannounce&tr=udp%3A%2F%2F9.rarbg.com%3A2710%2Fannounce&tr=udp%3A%2F%2Ftracker.yoshi210.com%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 - 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
+ If this gives you an error, set your DNS settings to "auto"
+ If this still gives you an error, [follow CTRTransfer](ctrtransfer), then try updating again
##### 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
##### Section VI - CTRNAND Luma3DS
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
+ Note that, if you had to fix the RTC date and time, you will have to fix the time in the System Settings as well after this guide
1. Press (Home) to bring up the action menu
1. Select "Scripts..."
1. Select "setup_ctrnand_luma3ds"
1. When prompted, press (A) to proceed
1. Press (A) to unlock SysNAND (lvl1) writing, then input the key combo given
1. Press (A) to continue
1. Press (A) to relock write permissions
##### Section VII - Backup SysNAND
1. Press (Home) to bring up the action menu
1. Select "Scripts..."
1. Select "Backup SysNAND"
1. Press (A) to confirm
+ This process will take some time
1. Press (A) to continue
1. Hold (R) and press (B) at the same time to eject your SD card
1. Insert your SD card into your computer
1. Copy `_nandmin_###.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)
+ This backup will save you from a brick if anything goes wrong in the future
+ Replace your old arm9loaderhax NAND backup with this new boot9strap one
1. Delete `_nandmin_###.bin` from the `/gm9/out/` folder on your SD card after copying it
1. Reinsert your SD card into your device
##### Section VIII - Cleanup SD Card
Note that this script will remove the `/boot9strap/` and `/cias/` folders from your SD card!
{: .notice--danger}
1. Press (Home) to bring up the action menu
1. Select "Scripts..."
1. Select "cleanup_sd_card"
1. When prompted, press (A) to proceed
1. Press (A) to continue
1. Press (Start) to reboot
___
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).
{% endcapture %}
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