I don't want to post a lot of personal details here, but if anyone can help me out and share a code, that'd be great. I've PMed a few people, and if you're interested in sharing one I can explain why, but I understand if people don't want to share with someone with so low a post count.
I used it on Luigi's Mansion 3DS in store and it worked - sort of. The clerk called corporate, who made him try a few different things before telling him it shouldn't work because of the $20 dollar limit, but he told them that he would "take care of the customer and override it because that was...