Comes withokesavPokemon Diamond .sav file (for R4)and a cheat.dat file (for R4)pokesav is translated and both .dat and .sav files above are for the (U) version of Pokemon Diamond.the readme tells you how to use the files above.
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