I'm pretty sure you need IOSU hack to spoof the firmware, but I didn't explore much the spoof topic =). But maybe ..
Nop I can't load the game complety, it always crashes at some point.
In the video it doesn't crash because I skipped the loading of one file with cafiine, so it can't loads till the end (when the file is retrieved by network, just after retrieving the data, the wiiu can't communicate anymore, I don't know why, maybe network problem, maybe thread problem, maybe i didn't implement well some filesystem function ...).
It also happens with other games I tried. Still investigating ...
For the moment it's still in development state with most of the stuff done by hand. I'll try to make easy tools when everything will be released.
note : cafiine doesn't do the dump, it is only used to send the game files and mirroring the filesystem functions.
Why don't you let others test it with faster networks to try and see if it is a network issue?. It might just be down to the fact your local network is not fast enough to send data to your wiiu? It would be a shame if its just down to that problem cause it could affact many with slower networks.