Nintendo secretly locks back door. (Another Update Nag) 2/1/16

I didn't see a thread about this, but anyways...
I've been peacefully playing and enjoying most of online with my 10.1.0-27 N3DS but all of a sudden (on 2/1/16) I noticed that I couldn't play MK7 online. That was the first time in ages I receive that error (Update Notice). Not only are games effected but the entire system is getting nagged, even my friends list. I had the TUBEHAX DNS on my networks but I'm pretty sure I ended up getting...​