3DS:FTP

FTP (File Transfer Protocol) is a way to transfer files wirelessly through a local network.

What You Need
On your computer:
 * A working FTP client
 * Windows: Use WinSCP
 * macOS: Use Cyberduck
 * Linux: Nautilus or Dolphin, the file explorers for GNOME and KDE respectively - if not usable, use gFTP instead

On your 3DS:
 * The latest release of (any   or  )
 * The normal (unlabelled) version has a GUI while the  version is entirely text-based

Instructions
If your 3DS can use the internet, choose the Universal-Updater method.
 * -|Universal-Updater=

Section I - Prep Work

 * 1) Open Universal-Updater
 * 2) Tap the magnifying glass icon on the bottom screen, and search for ftpd
 * 3) Press A on the ftpd entry, and choose one of the four ftpd/ftpd-classic files
 * 4) Once it finishes downloading, exit Universal-Updater

Did you choose a  or a   version of ftpd?


 * -|Manual=

Section I - Prep Work
Did you choose a  or a   version of ftpd?
 * 1) Turn the 3DS off
 * 2) Insert your SD card into your computer
 * 3) Download one of the four ftpd/ftpd-classic files and move it into the correct place on your SD card
 * 4) * If you chose one of the  files, its correct place is the   folder - create this folder if it does not exist
 * 5) * If you chose one of the  files, its correct place is the   folder - create this folder if it does not exist
 * 6) Insert your SD card into your 3DS
 * 7) Turn the 3DS on

Section II - FTP Client

 * 1) If you haven't already, install the FTP client for your operating system
 * 2) Open the FTP client and fill in the information as follows:
 * 3) * File protocol: FTP (not SFTP)
 * 4) * Host name/IP address: The IP address displayed on the top screen of the 3DS (e.g. 192.168.0.67)
 * 5) ** This is a local IP address, so you don't need to censor it if you need assistance
 * 6) * Port number: The number after the colon in the IP address displayed on the top screen of the 3DS (usually 5000)
 * 7) ** If you don't see this option, instead type  into the host name/IP address box, e.g.
 * 8) * Username/password: If you see a checkbox for "Anonymous login", then enable it; otherwise, just leave it blank
 * 9) Click "Login" or "Connect"
 * 10) * If prompted to enter a username or password, press ENTER to leave it blank

Your computer is now connected to your 3DS via FTP!

Why not microSD Management?
While New 3DS models can do a similar method through microSD Management, said method has a number of downsides:
 * microSD Management does not exist on Old 3DS models.
 * microSD Management uses a protocol (SMBv1) that is only supported by Windows.
 * Additionally, SMBv1 is heavily outdated, now a major security risk, and disabled by default on modern installations of Windows.
 * microSD Management can cause random file corruption in use.