My Wii U came with Mario Kart 8 as a bundle along with a code to download both DLC's. I successfully installed Mario Kart 8 on my friends Wii U using the installer. Am I able to like backup the DLC files? If so, will it have Nintendo's signature to install it on my friends Wii U? Sent from my SM-G903W using Tapatalk EDIT: if I can back Up the DLC how do I do that also?