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3DS Hacks Guide
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<p>Any unsigned (illegitimate) games will be rendered unusable and will be removed during this process. Use a <ahref="https://github.com/FlagBrew/Checkpoint/releases/latest">save manager</a> to back up any saves that you care about.</p>
<divclass="notice--danger">
<p>If you’re removing CFW because:</p>
<ul>
<li>You want to re-install it</li>
<li>One of your games is broken</li>
<li>One of your system applications is broken</li>
<li>Your console is unable to boot to HOME Menu</li>
</ul>
<p><u><strong>STOP!!!</strong></u> Uninstalling custom firmware is an unnecessary risk that will at best waste your time and at worst <u><strong>BRICK</strong></u> your console. A better idea would be to ask for help at <ahref="https://discord.gg/MWxPgEp">Nintendo Homebrew on Discord</a>.</p>
</div>
<divclass="notice--danger">
<p>If you have done ANY of the following:</p>
<ul>
<li><ahref="region-changing">Changed the region</a> of the console</li>
<li>Installed a custom keyboard</li>
<li>Installed a custom HOME Menu (<em>not</em> a custom theme)</li>
<li>Manually changed the encryption key (<codeclass="language-plaintext highlighter-rouge">movable.sed</code>) of the console</li>
<li>Unbanned the console</li>
</ul>
<p>then uninstalling CFW <u><strong>WILL BRICK YOUR CONSOLE</strong></u>. If this applies to you, <ahref="godmode9-usage#restoring-a-nand-backup">restore a clean NAND backup</a> before continuing.</p>
<pclass="notice--warning">These instructions will only work on consoles with a Luma3DS version of 8.0 or higher. If you have an older version of Luma, you must upgrade your setup before following these instructions. Follow <ahref="checking-for-cfw">this page</a> to find your upgrade instructions.</p>
<li>The latest release of <ahref="https://github.com/LumaTeam/Luma3DS/releases/latest">Luma3DS</a> (the Luma3DS <codeclass="language-plaintext highlighter-rouge">.zip</code> file)</li>
<li>The latest release of <ahref="https://github.com/d0k3/GodMode9/releases/latest">GodMode9</a> (the GodMode9 <codeclass="language-plaintext highlighter-rouge">.zip</code> file)</li>
<li>Copy <codeclass="language-plaintext highlighter-rouge">boot.firm</code> and <codeclass="language-plaintext highlighter-rouge">boot.3dsx</code> from the Luma3DS <codeclass="language-plaintext highlighter-rouge">.zip</code> to the root of your SD card</li>
<li>Copy <codeclass="language-plaintext highlighter-rouge">GodMode9.firm</code> from the GodMode9 <codeclass="language-plaintext highlighter-rouge">.zip</code> to the <codeclass="language-plaintext highlighter-rouge">/luma/payloads/</code> folder on your SD card</li>
<li>Copy the <codeclass="language-plaintext highlighter-rouge">gm9</code> folder from the GodMode9 <codeclass="language-plaintext highlighter-rouge">.zip</code> to the root of your SD card</li>
<li>Copy <codeclass="language-plaintext highlighter-rouge">DSiWareUninstaller.3dsx</code> to the <codeclass="language-plaintext highlighter-rouge">/3ds/</code> folder on your SD card</li>
<li>Copy <codeclass="language-plaintext highlighter-rouge">safety_test.gm9</code> to the <codeclass="language-plaintext highlighter-rouge">/gm9/scripts/</code> folder on your SD card</li>
<h4id="section-ii---ds-mode-tests">Section II - DS Mode Tests</h4>
<p>The purpose of this section is to check whether built-in DS mode applications will continue to work once CFW is uninstalled. If you skip this section, DS mode or its functions may be inaccessible until CFW is reinstalled.</p>
<pclass="notice--warning">If either of these tests has failed, DS mode, DS Download Play, and/or DS Connection Settings may be inaccessible once CFW is uninstalled! You should <ahref="troubleshooting#software-issues-on-consoles-with-custom-firmware">fix DS mode</a> before continuing.</p>
<p>The purpose of this section is to verify that the console will boot and that critical system functions, like System Settings and the keyboard, will work once CFW is uninstalled. <strong>If you skip this section, you may BRICK your console!</strong></p>
<li>If you do not boot into the regular 3DS HOME Menu (black screen, error screen, etc.), uninstalling CFW <strong>WILL BRICK YOUR CONSOLE!</strong></li>
<pclass="notice--danger">If you do NOT boot into the regular 3DS HOME Menu, or System Settings / your keyboard is inaccessible, <strong>DO NOT continue with these instructions</strong>! Join <ahref="https://discord.gg/MWxPgEp">Nintendo Homebrew on Discord</a> and ask (in English) for someone there to assist you.</p>
<h4id="section-iv---nand-backup">Section IV - NAND Backup</h4>
<h4id="section-v---removing-illegitimate-content">Section V - Removing illegitimate content</h4>
<pclass="notice--warning">This section will remove illegitimate content, like homebrew and dumped cartridges. If you have save data that you care about, back it up with a save manager before continuing!</p>
<li>Navigate to Data Management > Nintendo 3DS > Software</li>
<li>In this list of software, delete any non-Nintendo content you installed while using CFW
<ul>
<li>This includes common system software such as FBI, Anemone3DS, Luma Updater, Homebrew Launcher, Checkpoint, and others, along with any games and titles that you did <em>not</em> install from the eShop</li>
<li>In this list of software, delete any non-Nintendo content you installed while using CFW
<ul>
<li>This includes software such as TWiLightMenu++, along with any games and titles that you did <em>not</em> install from the eShop</li>
<li>Failure to remove all CFW software from both the 3DS and DSiWare sections before uninstalling CFW may prevent or disable access to the Data Management menu after uninstalling CFW, which will make it difficult to re-install CFW in the future</li>
</ul>
</li>
<li>Exit the System Settings application</li>
<li>Launch the Download Play application (<imgsrc="https://3ds.hacks.guide/images/download-play-icon.png"alt=""height="24px"width="24px"/>)</li>
<li>Wait until you see the two buttons</li>
<li>Press (Left Shoulder) + (D-Pad Down) + (Select) at the same time to open the Rosalina menu</li>
<li>Select “Miscellaneous options”</li>
<li>Select “Switch the hb. title to the current app.”</li>
<li>Press (B) to continue</li>
<li>Press (B) to return to the Rosalina main menu</li>
<h4id="section-vi---system-format">Section VI - System Format</h4>
<p>This section will ensure that all illegitimate tickets are removed, allowing eShop to work normally. This will remove all content from the 3DS and log you out of your NNID. Keep in mind that your console’s encryption key will be shuffled, meaning that any old data will be rendered inaccessible, even if you have a backup of your SD contents.</p>
<li>Navigate to Other Settings -> Next Page (until the final page) -> Format System Memory</li>
<li>Follow the prompts to format your 3DS</li>
</ol>
<h4id="section-vii---running-uninstall-script">Section VII - Running Uninstall Script</h4>
<pclass="notice--warning">This is your final opportunity to verify that all safety steps above have been followed! Please ensure that you have followed all sections on this page, <strong>especially</strong><codeclass="language-plaintext highlighter-rouge">Section III - Safety Test</code>, before continuing.</p>
<pclass="notice--info">You can now remove any extra files and folders from the root of your SD card that are <em>not</em> the <codeclass="language-plaintext highlighter-rouge">Nintendo 3DS</code>, <codeclass="language-plaintext highlighter-rouge">DCIM</code>, or <codeclass="language-plaintext highlighter-rouge">private</code> folders.</p>
