Things You'll Need
Instructions
Start up your Wii and click the ̶0;Wii Options̶1; button. You will see it as a circular button in the bottom left corner of the screen.
From the Options screen, select the ̶0;Wii Settings̶1; button. It includes a picture of a wrench.
Look for the version number indicated at the top right corner of the Settings screen. It should say, for example, ̶0;Ver. 3.3.̶1; This is your system software version.