1.0 was the "update" containing the set of titles included with the Wiis on Launch Day. It was also what was installed by the Wii Startup Disc. Only a handful of channels were available (Disc Channel, Mii Channel, Photo Channel), and some dummy channels (Forecast Channel dummy and News Channel dummy). A full Wii Shop Channel is present here, but it shows a similar dummy banner if the system is on 1.0.
System Menu 1.0 has no version listed; this version is assumed to be 1.0 due to the next update being 2.0, but some people simply refer to this as the "Default" update. The lack of a version label may have been to avoid confusion of offline users, and also the reason there is no option to perform an update on 1.0U.
Differences from modern versions
- The Disc Channel has a different icon that cycles between showing the "Wii" logo for a few seconds and showing a grey disc.
- "Launch-Day" menu shipped with early Wiis. (Does not report a version number.)
- No weather, news or shop channel available.
- Launching channels was a lot faster on 1.0U. There is no delay, If you press start on a channel, it immediately goes to black, with the banner music still playing. This was fixed in 1.0E and 1.0J.
- No version string or update button in the settings. Updates can only be done by performing a connection test.