Wii not updating
Wii system updates are required before playing most games, like The Sims 3, Super Mario Galaxy, Doctor Who: Return to Earth, Iron Man 2, and certain Guitar Hero and Rock Band games.
The worst part is that I literally even if I don't want to get Corrin, Bayonetta, etc. It should download the latest version directly to your hard drive, so you don't have to update.
If you followed the tutorial linked to above you should have already blocked your Wii U from auto updating, if not then follow this guide here to block Wii U System Updates if you care about Homebrew and Hacks.
How Do I Restore the Homebrew Channel After I Accidentally Update My Wii?
On this page, you will find all there is to know about the Software updates for Minecraft: Wii U Edition (released on December 17th worldwide).
NB: since this page was created on January 31st, we’re only listing updates released from that date onwards.