You won't get auto-updated. They have legal rules. If you need to update your shop channel, follow the Update Wii Shop Channel to v20 guide.
If you still don't feel confident about their agreement, keep on reading. I'm assuming that it's the EULA you're encountering. You can just got to AnyRegionChanger and change the EULA to read (make sure to plainly reply no first to the point where they ask you to agree, then use ARC to change it to read.)
Edit: and they can't detect the S/W.