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<li style="display: none;" data-name="installing-boot9strap-(soundhax)"><a href='/installing-boot9strap-(soundhax)'>Installing boot9strap (Soundhax)</a></li>
<li style="display: none;" data-name="installing-boot9strap-(safecerthax)"><a href='/installing-boot9strap-(safecerthax)'>Installing boot9strap (safecerthax)</a></li>
<li style="display: none;" data-name="installing-boot9strap-(ssloth-browser)"><a href='/installing-boot9strap-(ssloth-browser)'>Installing boot9strap (SSLoth-Browser)</a></li>
<li style="display: none;" data-name="installing-boot9strap-(fredtool-inject)"><a href='/installing-boot9strap-(fredtool-inject)'>Installing boot9strap (Fredtool-Inject)</a></li>
<li style="display: none;" data-name="installing-boot9strap-(menuhax)"><a href='/installing-boot9strap-(menuhax)'>Installing boot9strap (menuhax)</a></li>
<li style="display: none;" data-name="installing-boot9strap-(kartdlphax)"><a href='/installing-boot9strap-(kartdlphax)'>Installing boot9strap (kartdlphax)</a></li>
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<h1 id="page-title" class="page__title" itemprop="headline">Installing boot9strap (MSET9)
</h1>
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<div class ="notice"><b>For support in English, ask for help at <a href="https://discord.gg/MWxPgEp">Nintendo Homebrew on Discord</a>.</b></div>
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<header><h4 class="nav__title"><i class="fas fa-file-alt"></i> Table of Contents</h4></header>
<ul class="toc__menu" id="markdown-toc">
<li><a href="#compatibility-notes" id="markdown-toc-compatibility-notes">Compatibility Notes</a></li>
<li><a href="#what-you-need" id="markdown-toc-what-you-need">What You Need</a></li>
<li><a href="#instructions" id="markdown-toc-instructions">Instructions</a> <ul>
<li><a href="#section-i---prep-work" id="markdown-toc-section-i---prep-work">Section I - Prep Work</a></li>
<li><a href="#section-ii---mset9" id="markdown-toc-section-ii---mset9">Section II - MSET9</a></li>
<li><a href="#section-iii---installing-boot9strap" id="markdown-toc-section-iii---installing-boot9strap">Section III - Installing boot9strap</a></li>
<li><a href="#section-iv---removing-mset9" id="markdown-toc-section-iv---removing-mset9">Section IV - Removing MSET9</a></li>
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<li><a href="#continue-to-finalizing-setup" id="markdown-toc-continue-to-finalizing-setup">Continue to Finalizing Setup</a></li>
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<details class="notice--info">
<summary><em>Technical Details (optional)</em></summary>
<p><a href="https://github.com/zoogie/MSET9">MSET9</a> is an exploit for the System Settings application developed by <a href="https://github.com/zoogie">zoogie</a>. It exploits a flaw where the ID1 (the second 32-character folder name inside of the Nintendo 3DS folder, inside of the ID0) can be <em>any</em> name as long as it is 32 characters. Performing a specific sequence of actions results in the console executing the instructions that are encoded into the ID1 folder name, which can be used to grant full control over the 3DS.</p>
</details>
<h3 id="compatibility-notes">Compatibility Notes</h3>
<p class="notice--warning">This method requires a computer running Windows or Linux. macOS is NOT supported, nor are phones or tablets. If you do not have access to Windows or Linux, you will need to use an <a href="alternate-exploits">alternate exploit</a>.</p>
<h3 id="what-you-need">What You Need</h3>
<ul>
<li>The latest release of <a href="https://github.com/zoogie/MSET9/releases/latest">MSET9</a> (the Release <code class="language-plaintext highlighter-rouge">.zip</code> file)</li>
<li>Any 3.x version of <a href="https://www.python.org/downloads/">Python</a> <strong>installed on your computer</strong>
<ul>
<li>If you are on Linux, you likely already have Python 3. Check by opening a terminal and entering <code class="language-plaintext highlighter-rouge">python3 -V</code>. If this returns a version number, it will work for this guide.</li>
</ul>
</li>
</ul>
<h3 id="instructions">Instructions</h3>
<h4 id="section-i---prep-work">Section I - Prep Work</h4>
<p>In this section, you will prepare the SD card data necessary for the MSET9 exploit to trigger.</p>
<ol>
<li>Power on your console <strong>with your SD card inserted</strong></li>
<li>Open Mii Maker</li>
<li>Wait for your console to reach the “Welcome to Mii Maker” screen, then exit Mii Maker
<ul>
<li>You may see <a href="/images/screenshots/mset9/mii-extdata.png">this screen</a>, which indicates the necessary data has been created</li>
<li>If you just reach the normal Mii Maker screen, exit Mii Maker and continue to the next step</li>
</ul>
</li>
<li>Power off your console</li>
<li>Insert your SD card into your computer</li>
<li>
<p>Copy everything from the Release <code class="language-plaintext highlighter-rouge">.zip</code> to the root of your SD card, overwriting any existing files</p>
<p class="notice--info"><img src="/images/screenshots/mset9/mset9-root-layout.png" alt="MSET9 root layout" /></p>
</li>
<li>Execute the <code class="language-plaintext highlighter-rouge">mset9.py</code> script on the root of your SD card
<ul>
<li><strong>Windows</strong>: Double-click <code class="language-plaintext highlighter-rouge">mset9.bat</code>
<ul>
<li>If this doesnt work: hold SHIFT and right-click anywhere in the SD card window, then click the option that opens Terminal, PowerShell, or Command Prompt, then type <code class="language-plaintext highlighter-rouge">py -3 mset9.py</code> and press Enter</li>
</ul>
</li>
<li><strong>Linux</strong>: open a Terminal window, <code class="language-plaintext highlighter-rouge">cd</code> to the root of your SD card, then type <code class="language-plaintext highlighter-rouge">python3 mset9.py</code> and press Enter</li>
<li>You should see a window that says “MSET9 … SETUP by zoogie”</li>
<li>You should keep this window open until the end of this page, but if you close it by accident, you can open it again by redoing this step</li>
</ul>
<p class="notice--info"><img src="/images/screenshots/mset9/mset9-select.png" alt="Image: MSET9 setup" /></p>
</li>
<li>Type the number corresponding to your console model and version, then press Enter
<ul>
<li>The window should change to this:</li>
</ul>
<p class="notice--info"><img src="/images/screenshots/mset9/mset9-setup.png" alt="Image: MSET9 setup" /></p>
<ul>
<li>Ensure that the correct console model and version is displayed</li>
</ul>
</li>
<li>Type <code class="language-plaintext highlighter-rouge">1</code>, then press Enter to setup MSET9
<ul>
<li>If you see “(title.db/import.db) does not exist on SD card!”:
<ul>
<li>Type “yes”, then press Enter</li>
<li>Close the MSET9 window</li>
<li>Safely eject your SD from your computer</li>
<li>Insert your SD card into your console</li>
<li>Power on your console</li>
<li>Navigate to System Settings -&gt; Data Management -&gt; Nintendo 3DS -&gt; Software -&gt; Reset (<a href="/images/screenshots/database-reset.jpg">visual instructions</a>)</li>
<li>Power off your console</li>
<li>Insert your SD card into your computer</li>
<li>Go back to Step 7 (“Execute the <code class="language-plaintext highlighter-rouge">mset9.py</code> script”)</li>
</ul>
</li>
</ul>
</li>
<li>Once the window says “Setting up… done”, safely eject your SD card from your computer
<ul>
<li>Keep the MSET9 window open</li>
</ul>
</li>
<li>Reinsert your SD card into your console</li>
<li>Power on your console</li>
</ol>
<h4 id="section-ii---mset9">Section II - MSET9</h4>
<p>In this section, you will trigger MSET9 to launch SafeB9SInstaller (the custom firmware installer).</p>
<p class="notice--danger">These instructions must be followed <strong>EXACTLY</strong>, so double-check EVERYTHING you are doing to avoid errors!</p>
<ol>
<li><strong><a href="/images/screenshots/mset9/hover-settings.png">Hover over</a></strong> the System Settings icon using the D-Pad (do not select it yet)</li>
<li>Power off, then power on your console</li>
<li>Press (A) to launch System Settings</li>
<li>Navigate to <code class="language-plaintext highlighter-rouge">Data Management</code> -&gt; <code class="language-plaintext highlighter-rouge">Nintendo 3DS</code> -&gt; <code class="language-plaintext highlighter-rouge">Extra Data</code> (<a href="/images/screenshots/mset9/settings-extdata.png">image</a>)</li>
<li><strong>Do not press any buttons or touch the screen</strong> - ensure that you see the Mii Maker icon</li>
<li><strong>With the console STILL ON, and without pressing any buttons or touching the screen</strong>, remove your SD card from your console
<ul>
<li>The menu will refresh and say that no SD card is inserted, which is expected</li>
</ul>
</li>
<li>Insert your SD card into your computer</li>
<li>In the MSET9 window, type <code class="language-plaintext highlighter-rouge">2</code>, then press Enter to trigger MSET9
<ul>
<li>You should see “Injecting… done.”</li>
</ul>
</li>
<li>Safely eject your SD card from your computer
<ul>
<li>Keep the MSET9 window open</li>
</ul>
</li>
<li>Reinsert your SD card into your console <strong>without pressing any buttons or touching the screen</strong></li>
<li>If the exploit was successful, you will have booted into SafeB9SInstaller
<ul>
<li>If you get a red screen, follow the <a href="troubleshooting#installing-boot9strap-mset9">troubleshooting guide</a></li>
</ul>
</li>
</ol>
<h4 id="section-iii---installing-boot9strap">Section III - Installing boot9strap</h4>
<p>In this section, you will install custom firmware onto your console.</p>
<ol>
<li>When prompted, input the key combo given on the top screen to install boot9strap
<ul>
<li>If a step on the lower screen has red-colored text, and you are not prompted to input a key combo, <a href="troubleshooting#issues-with-safeb9sinstaller">follow this troubleshooting guide</a></li>
</ul>
</li>
<li>Once it is complete, press (A) to reboot your console</li>
<li>Your console should have booted into the Luma3DS configuration menu
<ul>
<li>Luma3DS configuration menu are settings for the Luma3DS custom firmware. Many of these settings may be useful for customization or debugging</li>
<li>For the purpose of this guide, <strong>leave these options on the default settings</strong> (do not check or uncheck anything)</li>
<li>If your console shuts down when you try to power it on, ensure that you have copied <code class="language-plaintext highlighter-rouge">boot.firm</code> from the Luma3DS <code class="language-plaintext highlighter-rouge">.zip</code> to the root of your SD card</li>
</ul>
</li>
<li>Press (Start) to save and reboot</li>
</ol>
<h4 id="section-iv---removing-mset9">Section IV - Removing MSET9</h4>
<p>In this section, you will remove MSET9 to prevent further issues. (This will not remove the custom firmware that you just installed.)</p>
<p class="notice--danger">Do NOT skip this section! If you do, applications may crash unexpectedly and you may encounter errors on the next page!</p>
<ol>
<li>Power off your console</li>
<li>Insert your SD card into your computer</li>
<li>In the MSET9 window, type <code class="language-plaintext highlighter-rouge">4</code>, then press Enter to remove MSET9
<ul>
<li>You should see “Removing… done”</li>
</ul>
</li>
<li>Close the MSET9 window; you will not need it for any of the upcoming steps</li>
</ol>
<p>At this point, your console will boot to Luma3DS by default.</p>
<ul>
<li>Luma3DS does not look any different from the normal HOME Menu. If your console has booted into the HOME Menu, it is running custom firmware.</li>
<li>On the next page, you will install useful homebrew applications to complete your setup.</li>
</ul>
<hr />
<p class="notice--danger">Did you follow Section IV (Removing MSET9)? That section is MANDATORY!</p>
<h3 class="notice--primary" id="continue-to-finalizing-setup">Continue to <a href="finalizing-setup">Finalizing Setup</a></h3>
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