Draugoth
Gold Member
Be extra careful where you buy your used Nintendo Switch game cards. A Switch 2 owner posted on Reddit about how their account was banned after downloading patches for a few Switch game cards they'd bought from Facebook Marketplace. The Switch 2 user contacted Nintendo support and discovered they were banned, but they provided proof of purchase and were unbanned shortly after. The Redditor said the "whole process was painless and fluid."
Nintendo attaches unique codes to its Switch game cartridges to prevent piracy. However, bad actors can copy games to a third-party device, like the MIG Flash, and resell the physical game card, meaning the code can exist twice.
"Basically, a thief buys/rents a game. They make a copy for themselves using the MIG dumper," dmanthey summarised. "They resell the original game and keep a copy for themselves on their MIG. Then both of you get banned when the Switch 2 goes online. Only one of you has the carts, so that's the person that will be unbanned."
Article: Nintendo Switch 2 Owner Says Their Console Was Banned After Playing Legitimate Second-Hand Games Another User Had Copied