I have one but it has the key site I can't share that I might mod it or whatever with a injector for GC/Wii and maybe N64 since N64 emulation sucks but I'll need a grasp of of python coding and the source code but I'll create a thread and warn people about bugs.
Are you able to share Funkii-UI without sending me that site (like, leaving that spot blank)? It'd be nice to get the tool as-is, without any alterations beyond what the original author wrote, since we know it worked as they originally intended. If you're interested in forking/modding it beyond that, that's awesome and I'd love to check out your work when it's ready, but right now getting a copy of the existing Funkii-UI is the only way I can do anything worthwhile with my WiiU, since I don't have a Windows computer available for USB Helper.
If you or anyone else is willing to share, thank you! Shoot me a PM.