Select your SD card root, boot9, seeddb, and d files (in some cases these will be automatically selected for you).Run ci-gui to bring up the custom-install GUI.Extract custom-install and copy over custom-install-finalize.3dsx to the 3ds folder on your SD card.You can use the Windows standalone with GUI for simpler process, or setup your own enviroment (for Windows 32/Linux/macOS).After it's finished, re-insert to 3DS and run custom-install-finalize at the end to insert the ticket and seed for it to show on the Home Menu.Use custom-install on your laptop/pc and install titles onto the micro SD (with boot9+movable).Using a 32-bit version of Python is recommended to build a version to be distributed.The compiled binary is located in target/debug/save3ds_fuse, copy it to bin/linux. Install rust using rustup, then compile with: cargo build.Linux users must build wwylele/save3ds and place save3ds_fuse in bin/linux.Provided as a separate download primarily for non-Windows users. custom-install-finalize - Installs a ticket, plus a seed if required.custom-install-module - For Windows/macOS/Linux user, to be used with Python (or setup your own GUI).custom-install-standalone - For Windows user, it includes GUI for simpler process and custom-install-finalize.boot9.bin and d - Dumped from a 3DS system.seeddb.bin - Required for newer games (2015+) that use seeds.It was initially created late June 2019 as an experimental script to automate the process of a manual title install for Nintendo 3DS. This completely bypasses the slow wireless and I/O speeds of the hardware. Custom-install is a Python 3.6+ tool that will install CIA files to a Nintendo 3DS SD card entirely on a PC.