Simple to use. You can import everything at once, including applications, updates, DLCs, saves, extra datas as well as necessary system datas. The UI is very simple, but usable and intutive. On your 3DS you will only need to run a GM9 script and everything is ready.
Fast. A PC's processing power and I/O speeds are obviously much better than a 3DS. In my test, importing all 20+ GiB of content only took about 20 minutes.
Does not require additional SD card space. Dumping a content requires space on your SD card. Importing it doesn't.

Usage Instructions

First of all, of course, you should download a release of threeSD and extract it somewhere.

If you are wishing to use threeSD with a portable install of Citra (i.e. that has a user folder), you can just copy the threeSD.exe there and it will automatically detect. Alternatively, click Customize... in the main dialog and change the Citra User Path field.

What you'll need

Nintendo 3DS with access to CFW and GodMode9
- Both New/Old are okay, but Citra only emulates the Old 3DS currently and New 3DS exclusive games won't work.
- If your 3DS is not yet hacked, you can hack it by following the instructions here.
- You can install GodMode9 by downloading it and copying the firm file to luma/payloads on your SD card. You can rename it to begin with [BUTTON]_ (e.g. X_GodMode9.firm) to set a convenicence button to hold during boot to enter GodMode9.
PC compatible with Citra
- You will need a graphics card compatible with OpenGL 3.3 and install the latest graphics drivers from your vendor's website.
- Operating system requirements: 64-bit Windows (7+), Linux (flatpak compatible) or macOS (10.13+). Note that Citra on macOS 10.13 is currently broken. It is recommended to update to 10.14.
SD / microSD card reader
- Make sure it can be well connected to your PC (i.e. do not use a 10-year-old dusty one)

On Your 3DS

You will need to run a GodMode9 script. If you are unsure about the script's safety (which is good!), check the source code yourself here.

Copy the gm9 script (threeSDumper.gm9) in dist to the gm9/scripts folder on your SD card.
Launch GodMode9 on your 3DS (you will need to hold a button corresponding to your firm file's name, or hold START to enter the chainloader menu). Press the Home button to bring up GodMode9's HOME Menu. Use the d-pad and the A button to select Scripts....
Use the d-pad and the A button to select threeSDumper. You will be prompted with a question "Execute threeSD Dumper?". Press A to confirm.
After a moment or two you will see the message "Successfully dumped necessary files for threeSD." Your 3DS SD card is now prepared for use with threeSD and Citra. Press A to exit the script.
Power off your 3DS with R+START. Remove the SD card from your 3DS and insert it into your PC (with a card reader).

On your PC

Make sure the SD card is properly recognized and shows up as a disk.

Launch threeSD. You should see a small dialog, which has your SD card as an auto-detected configuration.
- If it does not show up and the combo box says None, you should check if you can really find your SD card in the explorer (aka. My Computer), whether the drive for your SD card is accessible, and whether it contains the Nintendo 3DS and threeSD folders.
Click OK. After a few seconds of loading, you should see the Select Contents dialog. Select the contents you would like to import. By default, contents that do not currently exist is selected. Make sure the total size of your selected contents do not exceed the available space on your disk.
- The System Data group contains important data that is necessary for your imported games to run. You should definitely import the contents there, if they do not exist yet.
After you've finished your selection, click OK. You should now see a progress dialog; wait a while until your contents are imported.
- The time will depend on how big your contents are, as well as your CPU processing power and (mainly) disk I/O speeds.
- The progress is only updated every time a content has been fully imported. If you see it stall for a long time, it just means that a very large content is being processed. Just be more patient and do not worry. You can also check the disk usage in Task Manager.

What to do next

You can now enjoy your games with Citra, at high resolutions, with custom controllers, and the (now in Canary) Custom Textures feature!

It is recommended that you also dump your system archives and shared fonts and optionally dump your config savegame (if you come across problems), for the best experience while enjoying Citra.

If you have any game cartidges, and would like to dump them as well, visit this tutorial.

TODO

System archives
Config savegame
UI improvements
- Better error messages
- Beautiful icons
- Better progress indicator
Bug fixes
Clear all the TODOs in the code
Wireless transfer (probably FTP?)
- but: slow, complex

Languages

C++ 93.3%

CMake 4.6%

Shell 1%

Python 0.8%

C 0.3%