A Wii System Update will add new features to upgrade your Wii console. To update your Wii console to the latest version, simply connect your console to the Internet and manually select "Wii System Update" from the Wii System Settings page.
You can check the version of your Wii console by looking at the numbers on the top right corner on page 1 of the Wii System Settings page.
Wii System Update 4.0
Feature additions on your Wii console when it is updated to version 4.0:
SD Memory Card Functionality
The SD Memory Card functionality of the Wii console has been enhanced to support the following features:
Please note that an updated version of the Wii Speak Channel that supports the SDHC Memory Card format can be downloaded from the Wii Shop Channel. The current version of the Wii Speak Channel will not be able to communicate with the updated version, so all parties using the Wii Speak Channel will need to perform this update for continued operation.
Wii Shop Channel
Important: Save files created by unauthorised modifications may cause damage to your Wii console. This Wii Menu update will detect and automatically delete such files. Please note that these deletion measures will not affect Wii consoles that contain only normal save files.
Wii System Update 3.1
Feature additions on your Wii console when it is updated to version 3.1:
You can now use a USB keyboard with your Wii. Please note that some USB keyboards may not function correctly. Nintendo recommends the Classic Keyboard 200 from Logitech.
Please note that the USB keyboard is compatible with the Wii Menu, but is not supported by the Everybody Votes Channel or the Mii Channel.
Wii System Update 3
Feature additions on your Wii console when it is updated to version 3 from version 2:
Wii Message Board
Wii Shop Channel
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