WiiSCU

Im on 4.1 and wish to update my shop channel, exactly how would I use this app? (Dont wanna screw up mah Wii thx) :)

Run it, press 1 at warning screen, select Shop Channel and hit Install Updates. You dont need to install any IOS if you're on 4.1. (Not 100% sure the option is "Install Updates", but I believe its something like that)

Ok hope it is. Thanks :)