A slightly updated version of the software that also generates the Korean key as well as the common key. The Korean key is called kkey.bin.Could be useful for a few apps soon.....
I don't have a wii u anymore to test it myself, but if homebrews are not visible on the wii u menu I think you can press L + R + minus to open the plugin menu, there should be an option called "homebrews on wii u menu" or something similar