Wii firmware releases are not common like PS3 but we have got one now, for the US and the European Wii owners. Nintendo has pushed it to v4.1 and although the exact changes are unknown, it should carry the fix that caused Wii Sports Resort to play the initial Wii MotionPlus video every time it was loaded.
If you’ve got WiiConnect24, the update must have already been pushed to your console or you can update the firmware by checking it manually.
r4 sdhc says
what are the effects of the upgrade?
Kunal Gangar says
@r4 sdhc: Little is known but its expected to fix a bug in the Wii Sports Resort that played the MotionPlus video everytime the game was started.