I followed this guide here: http://www.ps3news.com/forums/wii-news/ult...usb-107159.html ... I did the "Offline Downgrade/Upgrade" ... so I can install vc games on the wii 4.1u I also did this: "If you want to load games from the disc channel you must install CIOSCORP The following section applies to both Online and Offline installations." ... what it does is allow wii games (backups) to work on a wii with no modchip. But afterwards, none of the original gamecube games don't work anymore, i just insert the gamecube games and then after a few seconds an error has occurred and need the wii to turn off... refer to the instructions...etc. I did this on my friend's wii (4.1u, no modchip). My wii is 4.1u and has wiikey v1 so it works.