they wouldn't even have ANY IOS on their card, and no homebrew capable of downloading Wii version of the IOSes. Like CJB said, if users followed the guides, they wouldn't even have a Wii version of a IOS. Users are keeping their files used to hack the wii on their SD card thinking it's alright but some homebrew are using these files automatically if found. The two (old/previous) vWii tutorial said to use a clean, new, without residual Wii homebrew or files, formated SD card.