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custom-install

Experimental script to automate the process of a manual title install for Nintendo 3DS. Originally created late June 2019.

Summary

Note for Windows users: Enabling "Add Python 3.X to PATH" is NOT required! Python is installed with the py launcher by default.

  1. Dump boot9.bin and movable.sed from a 3DS system.
  2. Install pycryptodomex:
  • Windows: py -3 -m pip install --user --upgrade pycryptodomex
  • macOS/Linux: python3 -m pip install --user --upgrade pycryptodomex
  1. Download the repo (zip link or git clone)
  2. Run custom-install.py with boot9.bin, movable.sed, path to the SD root, and CIA files to install (see Usage section).
  3. Download and use custom-install-finalize on the 3DS system to finish the install.

Setup

Linux users must build wwylele/save3ds and place save3ds_fuse in bin/linux.

movable.sed is required and can be provided with -m or --movable.

boot9 is needed:

  • -b or --boot9 argument (if set)
  • BOOT9_PATH environment variable (if set)
  • %APPDATA%\3ds\boot9.bin (Windows-specific)
  • ~/Library/Application Support/3ds/boot9.bin (macOS-specific)
  • ~/.3ds/boot9.bin
  • ~/3ds/boot9.bin

A SeedDB is needed for newer games (2015+) that use seeds.
SeedDB is checked in order of:

  • SEEDDB_PATH environment variable (if set)
  • %APPDATA%\3ds\seeddb.bin (Windows-specific)
  • ~/Library/Application Support/3ds/seeddb.bin (macOS-specific)
  • ~/.3ds/seeddb.bin
  • ~/3ds/seeddb.bin

Usage

Use -h to view arguments.

Examples:

py -3 custom-install.py -b boot9.bin -m movable.sed --sd E:\ file.cia file2.cia
python3 custom-install.py -b boot9.bin -m movable.sed --sd /Volumes/GM9SD file.cia file2.cia
python3 custom-install.py -b boot9.bin -m movable.sed --sd /media/GM9SD file.cia file2.cia

License/Credits

pyctr/ is from ninfs d994c78.

save3ds by wwylele is used to interact with the Title Database (details in bin/README).

Thanks to @BpyH64 for researching how to generate the cmacs.

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