Got a hacked Japanese 3ds that only list WEP as security option for wifi. Is this the firmware limiting the wifi setup because Nintendo list WPA2 for 3ds : r/3DS
親機にゲーム機等を接続する-ニンテンドーDS Lite/DS
Nintendo Support: How to Change the Wireless Security (Password) Settings
How to Connect DS Games to Wifi - 16 Bit Guide - YouTube
How to Manually Enter Security Settings | Support | Nintendo
Nintendo DS - Wikiwand
Einrichten der Nintendo Wi-Fi Connection
How To Connect Your DS To WPA or WPA2 WiFi Networks + How To Play Online!!! - YouTube
Manuelle Einstellungen | Nintendo DS | Hilfe | Nintendo