There's a certain .cia out there that can make it so that your 3DS believes you've accepted every EULA. I've had to use it in order to play out-of-region games with friends.
You're going to have to find it yourself, though.
Not at all what I meant but I can figure out my answer from that. As the user above mentioned there is a cia out there for that purpose. Though you could also try using a region changed emunand if that fails.