How to Block 3DS Updates with a Juice Box

[Larsenv]

1. Get your juice box.
2. Drink most of the juice.
3. Whenever a 3DS Update comes out, you must block any Wifi communications to your 3DS with the Juice Box.
4. Use an Amiibo.

 

[The Catboy]

yup, worked for me, 12.50 was blocked before it was even invented.