I had no idea, I never really used my vWii mode on my Wii U other than mess around with it for a few minutes when I first bought it, however my Wii U froze on me several times on Wii U mode, it took me a while to find a good alternate for a y-cable as it's essential for using a hard drive here, I would hold the power button for 5 seconds and it would shut down just fine!that only works on the wii, the wiiu holding the power button does nothing when something freezes in vwii, so any freeze on vwii being it nintendont not64, or any homebrew all you can do is pull the plug.