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3DS Hacks Guide
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<p>This will completely remove CFW from your device, including boot9strap and Luma3DS, for the purpose of restoring the device to stock.</p>
<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>
</div>
<pclass="notice--warning">These instructions will only work on devices 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>
<h3id="was-du-brauchst">Was du brauchst</h3>
<ul>
<li>The latest release of <ahref="https://github.com/LumaTeam/Luma3DS/releases/latest">Luma3DS</a></li>
<li>The latest release of <ahref="https://github.com/d0k3/GodMode9/releases/latest">GodMode9</a></li>
<li>The latest release of <ahref="https://github.com/MechanicalDragon0687/DSiWare-Uninstaller/releases/latest">DSiWare Uninstaller</a></li>
<h4id="abschnitt-i---vorbereitungen">Abschnitt I - Vorbereitungen</h4>
<ol>
<li>Schalte deine Konsole aus</li>
<li>Stecke deine SD-Karte in deinen Computer</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>Kopiere <codeclass="language-plaintext highlighter-rouge">GodMode9.firm</code>von der <codeclass="language-plaintext highlighter-rouge">GodMode9.zip</code>-Datei nach /luma/payloads/ auf deiner SD-Karte</li>
<li>Kopiere den Ordner <codeclass="language-plaintext highlighter-rouge">gm9</code> aus der GodMode9 <codeclass="language-plaintext highlighter-rouge">.zip</code> in das Stammverzeichnis deiner SD-Karte</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>
<li>Stecke deine SD-Karte nun wieder in deinen 3DS</li>
</ol>
<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>
<li>Navigate to <codeclass="language-plaintext highlighter-rouge">Internet Settings</code> -><codeclass="language-plaintext highlighter-rouge">Nintendo DS Connection Settings</code>, then click OK</li>
<li>You should boot into the Nintendo DS Connection Setup menu
<ul>
<li>If your console displays the Japanese version of Flipnote Studio, a black screen, or an error message, the test has failed</li>
</ul>
</li>
<li>Schalte deine Konsole aus</li>
</ol>
<h5id="ds-download-play-test">DS Download Play Test</h5>
<ol>
<li>Schalte deine Konsole an</li>
<li>Launch the Download Play application (<imgsrc="https://3ds.hacks.guide/images/download-play-icon.png"alt=""height="24px"width="24px"/>)</li>
<li>Wähle “Nintendo DS” aus</li>
<li>If your device loads into a “Download software via DS Download Play” menu, the test was successful
<ul>
<li>If your console displays the Japanese version of Flipnote Studio, a black screen, or an error message, the test has failed</li>
</ul>
</li>
<li>Schalte deine Konsole aus</li>
</ol>
<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-devices-with-custom-firmware">fix DS mode</a> before continuing.</p>
<h4id="section-iii---safety-test">Section III - Safety Test</h4>
<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 device!</strong></p>
<ol>
<li>Drücke und halte (Start), und während du (Start) hältst, schalte deinen 3DS an. This will launch GodMode9</li>
<li>If you are prompted to create an essential files backup, press (A) to do so, then press (A) to continue once it is complete</li>
<li>Wenn du aufgefordert wirst Datum und Uhrzeit der “RTC” (Real Time Clock, Echtzeituhr) zu korrigieren, drücke (A), stelle Datum und Uhrzeit ein und drücke (A) um fortzufahren
<ul>
<li>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 following this guide</li>
</ul>
</li>
<li>Drücke (Home), um das Aktionsmenü aufzurufen</li>
<li>Wähle “Scripts”</li>
<li>Select “safety_test”</li>
<li>Read the text on-screen and press (A) to continue</li>
<li>You should boot into the regular 3DS HOME Menu (any custom theme is irrelevant). If you do, continue these instructions
<ul>
<li>If you do not boot into the regular 3DS HOME Menu (black screen, error screen, etc.), uninstalling CFW <strong>WILL BRICK YOUR DEVICE!</strong></li>
</ul>
</li>
<li>Launch the System Settings Application
<ul>
<li>If the console crashes at this point, the test has failed</li>
</ul>
</li>
<li>Select “Other Settings”</li>
<li>Select “Profile”</li>
<li>Select “User Name”</li>
<li>If you are able to enter a new user name, the test was successful
<ul>
<li>If the keyboard does not appear, the screen freezes, or the console crashes, the test has failed</li>
</ul>
</li>
<li>Schalte deine Konsole aus</li>
</ol>
<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>
<ol>
<li>Drücke und halte (Start), und während du (Start) hältst, schalte deinen 3DS an. This will launch GodMode9</li>
<li>Drücke (Home), um das Aktionsmenü aufzurufen</li>
<li>Wähle “Scripts”</li>
<li>Wähle “GM9Megascript” aus</li>
<li>Wähle “Backup Options” aus</li>
<li>Wähle “SysNAND Backup” aus</li>
<li>Drücke (A) zum bestätigen
<ul>
<li>Dieser Vorgang nimmt einige Zeit in Anspruch</li>
<li>If you get an error, ensure you have at least 1.3GB of free space on your SD card</li>
</ul>
</li>
<li>Drücke (B), um zum Hauptmenü zurückzukehren</li>
<li>Select “Exit”</li>
<li>Drücke (Home), um das Aktionsmenü aufzurufen</li>
<li>Select “Poweroff system” to power off your device</li>
</ol>
<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>
<ol>
<li>Schalte deine Konsole an</li>
<li>Öffne die Systemeinstellungen</li>
<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>
</ul>
</li>
<li>Navigate to Data Management > DSiWare</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>Warte bis du die zwei Knöpfe siehst</li>
<li>Press (Left Shoulder) + (D-Pad Down) + (Select) at the same time to open the Rosalina menu</li>
<li>Wähle “Miscellaneous options”</li>
<li>Wähle “Switch the hb. title to the current app.”</li>
<li>Drücke (B) um fortzufahren</li>
<li>Drücke (B), um zum Rosalina-Hauptmenü zurückzukehren</li>
<li>Drücke (B), um das Rosalina-Menü zu schließen</li>
<li>Drücke (Home) und schließe die Download-Spiel Anwendung</li>
<li>Starte die Download-Spiel Anwendung</li>
<li>Deine Konsole sollte den Homebrew Launcher laden</li>
<li>Launch DSiWare Uninstaller from the list of homebrew</li>
<li>Follow the prompts and allow the program to uninstall</li>
<li>Once the process has succeeded, exit the Homebrew Launcher and power off your device</li>
</ol>
<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>
<ol>
<li>Schalte deine Konsole an</li>
<li>Öffne die Systemeinstellungen</li>
<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>
<ol>
<li>Drücke und halte (Start), und während du (Start) hältst, schalte deinen 3DS an. This will launch GodMode9
<ul>
<li>If you instead see the Luma3DS chainloader, use the D-Pad and the (A) button to select GodMode9</li>
</ul>
</li>
<li>Drücke (Home), um das Aktionsmenü aufzurufen</li>
<li>Wähle “Scripts”</li>
<li>Wähle “GM9Megascript” aus</li>
<li>Select “Hax Options”</li>
<li>Select “Un-install Hax”</li>
<li>Drücke (A), wenn du dazu aufgefordert wirst, um fortzufahren</li>
<li>Drücke (A) um die Schreibrechte für SysNAND (lvl3) zu aktivieren und gibt dann die angezeigte Tastenkombination ein</li>
<li>Drücke (A), um fortzufahren</li>
<li>Drücke (B), um zum Hauptmenü zurückzukehren</li>
<li>Wähle “Exit” aus</li>
<li>Drücke (A), um die Schreibrechte zu deaktivieren, wenn du dazu aufgefordert wirst</li>
<li>Drücke (Start) um deinen 3DS neu zu starten</li>
</ol>
<hr/>
<pclass="notice--success">Die gesamte Custom Firmware ist von deinem Gerät entfernt worden.</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>
