Thanks for this tool. I confirmed the first level of Spyros Adventure JP worked on US Wii U. A few steps weren't clear at first, so I'm adding them here for others. Here's what worked for me.
install haxchi and hbc, and spiik app
launch the haxchi into homebrew. - click and hold button...
Spiik sounds like the one reason to try homebrew. Thanks for giving us a way to play Japanese exclusives. Before I take the plunge, can you please confirm what I've gleamed from various posts is accurate?
Working configuration:
* US Region Wii U, update 5.5.2
* Haxchi (Coldboot custom...