So I used Uwizards function to download the game update for splatoon, I set it to version 160 (I think that's the correct one.) Placed all the files into "install" on the SD card and put it in my WiiU. Loaded up the kernal exploit and then went back and loaded up WUPinstaller, going back to the menu is causing the whole system to freeze. The only thing I'm confused about is the downloaded game update files (they have no extensions) and I'm not sure if in the previous times I've updated it I've seen extensions or not. What might be wrong?