3DS:FTP

FTP (File Transfer Protocol) is a way to transfer files wirelessly through a local network. 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 * Additionally, SMBv1 is heavily outdated, now a major security risk, and disabled by default on modern installations of Windows.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.

Luckily, with custom firmware, we can instead use FTP to transfer files wirelessly on both New 3DS and Old 3DS.

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!