I downloaded Zadig, have it set to wii U mode, but when I click the drop down list for Zadig's recognised devices there is nothing there that seems to be the Mayflash 4 device. I'm not really sure how to fix this :<
EDIT: Nevermind, I'm an idiot, had to switch it to different USB port.
EDIT: Nevermind, I'm an idiot, had to switch it to different USB port.