I mean... lets say you have a pretty childproof system that you're setting up for someone who isn't of the most technical mind. You're not putting in ATD, or even WAD manager... you already did the dangerous stuff.... the only real danger is a nintendo update. And while it doesn't happen often, there are a few different things that can ask for an update even if you have the preloader hack installed to block updates from discs. Let's say they update the shop channel... or one of the kids is messing with the internet settings and says yes to an update without knowing about not to. They should know. But they don't call it childproofing for no reason. So the question is... is there a way to block official updates, even if the user says yes to one? While a NAND backup will solve the problem, and should always, and is being made... it's not technically childproofing... it's child-anticipating.