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| This page is a guide to rebuilding the <code>title.db</code> file in your SD card.
| | * Shortcuts |
| | | ** User:ItsCrocoSwine/3DS Error toolkit|3DS Error toolkit |
| <code>title.db</code> is the name for two files - one on the 3DS' SD card, and one on its CTRNAND - which contain a list of all installed 3DS titles for its respective part of the filesystem (e.g. your SD card's <code>title.db</code> only has entries for titles installed to your SD card). For more information, check out [[3dbrew:Title Database|3dbrew]].
| | ** 3DS:Troubleshooting|3DS Troubleshooting |
| | | ** User:ItsCrocoSwine/common Pretendo errors|Common Pretendo errors |
| === What you need ===
| | ** Hacks Guide Wiki:Things to do|Things to do |
| | | ** Hacks Guide Wiki:Templates|Templates |
| * The latest release of {{GitHub|wwylele/save3ds/releases/latest|save3ds}} for your operating system | | ** Help:Files|Help:Files |
| * A version of [https://www.python.org/downloads/ Python 3.8 or later] | | ** User:Ihaveahax/All pages|All pages |
| * A 3DS console with custom firmware | | ** Special:ApprovedRevs|ApprovedRevs |
| * {{GitHub|ihaveamac/3DS-rom-tools/raw/master/seeddb/seeddb.bin|seeddb.bin}} | | ** https://wiki.hacks.guide/w/index.php?title=Special:Categories&limit=500|Categories |
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| === Section I - Preparing the files ===
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| # Press and hold {{B|START}}, and while holding {{B|START}}, power on your console. This will launch GodMode9
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| # Navigate into the drive <code>[M:] MEMORY VIRTUAL</code>
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| # Press {{B|A}} on <code>boot9.bin</code>, then select '''Copy to 0:/gm9/out'''
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| # Press {{B|A}} to continue
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| # Press {{B|B}} once to return to the main menu
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| # Navigate into <code>[1:] SYSNAND CTRNAND</code> -> <code>private</code>
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| # Press {{B|A}} on <code>movable.sed</code>, then select '''Copy to 0:/gm9/out'''
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| # Turn the 3DS off
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| # Insert your SD card into your computer
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| # Go to the {{GitHub|ihaveamac/rebuild-title-database|Rebuild Title Database}} repo's page
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| # Click the <big><span style="background:#008000">Code</span></big> button, then click '''Download ZIP'''
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| # Extract the contents of the downloaded <code>.zip</code> into a folder
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| #* This folder will be referred to as the "rebuild folder" from now on
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| # Copy <code>movable.sed</code> and <code>boot9.bin</code> from inside <code>sd:/gm9/out</code> and paste them into the rebuild folder
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| # Copy <code>seeddb.bin</code> into the rebuild folder
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| # Copy the <code>save3ds_fuse</code> binary from the save3ds <code>.zip</code> file into the rebuild folder
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| | |
| === Section II - Rebuilding the database ===
| |
| {{info|If you are not on Windows, replace <code>py -3</code> with <code>python3</code> in all commands.}}
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| {{warning|The commands in this section are case-sensitive. Enter them exactly as written, or there may be unintended consequences.}}
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| # Navigate to the rebuild folder in file explorer
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| # Hold SHIFT and right-click anywhere in the folder's empty space, then click the option that opens a terminal, PowerShell, or Command Prompt
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| # In this new window, enter the following commands one at a time:
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| ## <code>py -3 -V</code>
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| ##* If this does not print the Python version, it is either not installed correctly, or the wrong command was used. Please read the note above.
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| ## <code>py -3 -mpip install --user -r requirements.txt</code>
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| ## <code>py -3 fix-titledb.py -b boot9.bin -m movable.sed -s X:</code>
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| ##* If you are on Windows, replace <code>X:</code> with your SD card's drive letter. If you are not on Windows, replace <code>X:</code> with your SD card's mount point.
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| ## <code>py -3 rebuild-title-database.py -b boot9.bin -m movable.sed -S seeddb.bin -s X: -o out</code>
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| ## <code>./save3ds_fuse.exe --db sdtitle out --import --boot9 boot9.bin --movable movable.sed --sd X:</code>
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| ##* If you are not on Windows, remove <code>.exe</code> from this command
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| # If you didn't get any errors, your apps should reappear on the HOME Menu immediately
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| #* If they only appear in '''System Settings''' -> '''Data Management''', follow '''one''' of these sets of steps based on how they appear.
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| #** Appear normally: Check the contents of <code>sd:/Nintendo 3DS/<id0>/<id1>/title/00040000</code>; there should only be more folders inside that folder.
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| #*** If there is a file inside this folder, you have data corruption that this guide cannot fix - Backup your SD card to your PC, [[Formatting an SD card|reformat it]], and then try to move the backed-up files back to the SD. If this fails, [[Checking SD card integrity|check it for hardware damage.]]
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| #** Appear with a grey block count indicator and an X through their icons: Run [[3DS:Faketik|faketik]].
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| #** Appear with white/corrupted icons, 0 block count, and/or corrupted name: Whatever destroyed your <code>title.db</code> has also permanently corrupted your apps. Backup your SD card to your PC,[[Formatting an SD Card|reformat it]], and then [[Checking SD card integrity|check it for hardware damage]].
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| #* If they do not appear anywhere in the system, you may want to [[Checking SD card integrity|check your SD card for hardware damage]], as the apps are likely gone.
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| === Troubleshooting ===
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| * <code>boot9.bin</code> is missing from <code>[M:] MEMORY VIRTUAL</code> | |
| ** Follow the steps to [[3DS:Dump system files|dump your system files]] for more in-depth instructions, including those for bootloaders other than [[3DS:boot9strap|boot9strap]]. | |
| * The first command in Section II gave the error <code>ERROR: Could not open requirements file: [Errno 2] No such file or directory: 'requirements.txt'</code> | |
| ** Make sure you are in the rebuild folder and that you extracted the contents of <code>rebuild-title-database-master.zip</code> into it.
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| *** Once this is fixed, delete the <code>out</code> folder and try the command again.
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| * The third or fourth command in Section II failed
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| ** Make sure you have <code>boot9.bin</code> and <code>movable.sed</code> in the rebuild folder.
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| ** Make sure your SD card is inserted and you can view and edit its contents.
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| * The fifth command in Section II failed
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| ** If you are on macOS, try installing {{GitHub|osxfuse/osxfuse/releases/latest|osxfuse}}, either via its GitHub page or via [https://brew.sh Homebrew].
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| [[Category:Nintendo 3DS guides]]
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