Instructions
 
Run a game from your R4 cartridge that supports Wi-Fi. 
Select ̶0;Nintendo WFC̶1; then select ̶0;Nintendo WFC Settings.̶1; 
Press the ̶0;Nintendo Wi-Fi Connections Settings̶1; button. You will see three connection options available. 
Select the first connection and press ̶0;A.̶1; 
Press ̶0;Search for an Access Point.̶1; This will search for an available Wi-Fi connection. 
Select an available Wi-Fi access point then press ̶0;A.̶1; 
Press ̶0;A̶1; to begin a connection test. Once the connection tests concludes, your device will be connected to Wi-Fi.