Things You'll Need
Instructions
Turn on your Wii and click the round "Wii" button located in the bottom left hand corner of your Wii's main menu screen.
Click the "Wii Settings" button to launch the Wii System Settings menu.
Click the arrow on the right side of the menu twice to see more menu options.
Click "Wii System Update" from the settings menu.
Click the "Yes" button when you are prompted to update your system.
Choose "I Accept" to confirm the user agreement.
Allow the Wii to test your connection and search for an update. If there is a new update available, your system will automatically download and install the new firmware. This may take some time, depending on how large a download it is.