Most of people in here want to block the Wii U Firmware Update > 5.4 AFAIK. There's many way to block update to Using a Router, DNS. But some reason, It's not perfect to block it. Some of them already posted that don't believe this way. My Wii U, already set to DNS but updated to 5.4.0 by coincidently because of Dynamic IP. (That's... really sucks... That's why I bought a used one... 4.1.0) So I try to find another way, much better. From surfing, I saw it other forum, "If you installed fake-signed IOS in vWii, You can get error code before the update firmware." If it is right, Theoretically we can block the update. HOW? 1. Set you last firmware that want to block update (a.k.a 5.3.2) 2. Backup with your vWii IOS using a BlueModDump 3. Install Fake-Signed Wii IOS that doesn't harm the vWii. (Besure that you should have backed up origianl vWii IOS before the install!) 4. ??? 5. PROFIT! You have to backup vWii IOS in case of happening. That's just my theory, I'm not sure is it safe. But If it is right, It'll help to block automatic update. (by making a intended error-code) I'm not sure this will block disc-based update also. Would anyone try want to test?