Is the only way to load a backup from the disc channel by installing cioscorp? I have a friend who wants to load via the disc channel instead of using the HBC but I've been reading that cioscorp is a little risky. Does the system menu matter either? They are on system menu 4.0 with cios rev 10 installed. I also read about softmii. Is that less risky than cioscorp or is it the same thing?