---
title: "Installing boot9strap (MSET)"
---

If you have already hacked your device before and have a EmuNAND based CFW setup, this guide deals exclusively with SysNAND and you should follow all instructions from within or applying to SysNAND. Note that the terms EmuNAND and RedNAND refer to slightly different implementations of [the same concept](http://3dbrew.org/wiki/NAND_Redirection).

#### 你需要

* 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 [Luma3DS](https://github.com/AuroraWright/Luma3DS/releases/latest) *(the `.7z` file)*
* The latest release of [OCS](https://github.com/Pirater12/ocs/releases/latest)
* Any DS flashcart that works on your device version

#### 操作指南

##### 第一部分 - 准备工作

1. Power off your device
1. Insert your SD card into your computer
1. Copy `boot.3dsx` (OCS) 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 `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. Copy `SafeB9SInstaller.dat` from the SafeB9SInstaller `.zip` to the root of your SD card

    ![]({{ base_path }}/images/screenshots/boot9strap-mset-file-layout.png)
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1. Reinsert your SD card into your device
1. Copy `SafeB9SInstaller.nds` from the SafeB9SInstaller `.zip` to your DS flashcart
1. Power on your device

##### Section II - Launching SafeB9SInstaller

1. Start your DS flashcart from your device
1. Boot `SafeB9SInstaller.nds` using your flashcart
1. Select the correct option for your system version
  + 4.X.X -> "4.x SafeB9SInstaller"
  + 6.X.X -> "6.x SafeB9SInstaller"
1. Reboot the system, then go to System Settings, then "Other Settings", then "Profile", then "Nintendo DS Profile"
1. If the exploit was successful, you will have booted into SafeB9SInstaller

##### 第三部分 - 安装 boot9strap

1. Wait for all safety checks to complete
1. When prompted, input the key combo given to install boot9strap
1. Once it has completed, press (A) to reboot your device

##### Section IV - Configuring Luma3DS

1. Your device should have rebooted into the Luma3DS configuration menu
  + If you get a black screen, [follow this troubleshooting guide](troubleshooting#ts_sys_b9s)
1. 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
  + If you get an error, just continue the next page

___

Continue to [Finalizing Setup](finalizing-setup)
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