Wii Network Guide

Since the merger of the Wii-Network branch in 3.5-2143, Dolphin can now use the Nintendo WiFi Connection to play Wii games online. Since it uses the official Nintendo platform for Wii online gameplay, Dolphin users can play online with not only other Dolphin players, but with real Wii players as well. For copyright reasons, some of the files required to access the Nintendo WiFi Connection cannot be distributed with Dolphin and have to be obtained by the user.

'''As of May 20th 2014, the Nintendo WiFi Connection has been terminated. This guide was written while the WFC still existed and no longer works. These instructions will remain up to help provide a reference point for users dealing with custom servers. More specific instructions may come once the custom server scene has settled.'''
 * 4.0 and all revisions prior to use a common MAC address that was banned by Nintendo. 4.0-1019 and newer development versions randomize this address so each Dolphin user has a unique identifier.

Getting the Wii operating system files
Download and extract NUS Downloader. This program allows you to obtain various system files directly from Nintendo's official servers. Run the program then check the "Create Decrypted Contents(*.app)" box. Select the latest version of IOS 13: Database... > IOS > 000000010000000D - IOS13 > Latest Version.



Click the "Start NUS Download!" button to proceed. It will download the certain Wii operating system files from Nintendo. Once the download has completed, browse to the newly created directory under its executable directory: \titles\000000010000000D\1032\. Make sure that the 00000011.app file exists; it's the only file that you'll ever need for the next step.

Extracting the certificates from the 00000011.app file
Download the extract_certs.exe program. It will extract three final files necessary for Dolphin. Drag and drop 00000011.app onto that executable file, and it should create three files residing with 00000011.app:
 * clientca.pem
 * clientcakey.pem
 * rootca.pem

If you are using Linux or OSX, compile extract_certs.cpp (in C++11 mode) and use this to dump the certificates.

Copying the certificates to your Dolphin folder
Copy these three PEM files to the %userprofile%\Documents\Dolphin Emulator\Wii\ directory. After this is done, you should be able to access the Nintendo WiFi Connection with Dolphin! Enjoy.