I've ripped my game from my Wii U, vWii. And it copied to my USB successfully. Then I tried playing the ios game on my original wii with loader GX and Wiiflow because my lens is broken and wont take disc anymore. And I don't want to have to buy another wii just to play Mario kart. Everytime I try to load the game on loader GX it brings me back to the homebrew channel. And when I try to do it on Wiiflow it just stays on a black screen.
Is your Wii properly modded to play games from ISO? (not IOS, that's something different).