- Being included on a Wii Optical Disc with a game that requires it
- Included with a Message Board message about it
- Updated manually from the "Wii System Update" choice in the Wii Options, or after testing a connection in the "Internet" setting.
Such Wii System Updates may include new WiiConnect24 functionality, upgrades to preinstalled Wii Channels, new channels, support for downloadable channels, Wii Menu or Message Board design changes, repairing crashes, and blocking illegal loading devices such as the FreeLoader by Datel.
Version 2.0 (November 19, 2006): Added considerable functionality missing from original-launch Wiis, including SD card support, Parental Controls, and two other options (Country Settings and System Update). The Wii Menu design was also changed, and channels could be rearranged on the menu.
(November 30, 2006): Fixed exploits in the Wii Shop Channel.
(December 19, 2006): Activated the functionality of the Forecast Channel, as data had not been sent to it before this point.
Version 2.1 (January 10, 2007): Fixed a bug with RGB SCART output.
(January 26, 2007): Activated the News Channel in a similar method to that of the Forecast Channel.
Version 2.2 (April 11, 2007): Installed support for the final version of the Internet Channel.
Version 3.0 (August 6, 2007): Added AOSS support for networking, fixed bugs in the Wii LAN Adapter, disabled several modchips and other boot devices, and updated the Wii Shop Channel, Wii Menu, and Message Board.
Version 3.1 (October 10, 2007): Updated the Wii Shop Channel and added keyboard support.
(December 10, 2007): Added a "gifting" function to the Wii Shop Channel and added support for Photo Channel 1.1.
Version 3.2 (February 25, 2008): Added the ability for the disc slot to glow if new WiiConnect24 data was recieved while playing a game.
(March 20, 2008): Added WiiWare support to the Wii Shop Channel.