So I've been trying this for over 2 hours now almost.. I've a Wii with CIOS rev 20, and I don't have hermes cios 222 installed anymore somehow So i was going to install cios 222, but I get an hash error on the installer, and then I tried to look for the right 5.1 files... but can't really find em anywhere I heard you've to install the wads through wad manager 1.7 if you are on rev 20, or downgrade to rev 19, or lower and then install hermes cios 5.1, and then upgrade to cios rev 20... But the wads would be easier, though if i downgrade, is this safe? Can I just downgrade without having any problems? thanks in forward!