Nintendo Switch 2 User Banned for Second-Hand Game Linked to MIG Backup Tool
Do Son 
Recently, a Nintendo Switch 2 user found their console locked by Nintendo after using MIG, a tool for creating game backups. A locked console means that while the user’s account can still be accessed on other devices, the specific console is permanently barred from accessing any Nintendo cloud-based gaming services — even under different accounts.
However, this kind of anti-piracy enforcement occasionally results in unintended consequences. One user reported that their device was locked simply because they played a second-hand physical copy of a Switch 1 game purchased via Facebook Marketplace. The issue, again, stemmed from the game being previously duplicated using MIG.
Although the cartridge itself was authentic, the seller had used MIG to back up the game — a fact Nintendo’s detection systems flagged. When the unsuspecting buyer inserted the game into their Switch 2, the system was promptly locked.
The buyer was completely unaware of the game’s compromised status and expressed frustration, feeling unjustly penalized for an action they didn’t knowingly commit. After all, there was no visible way to determine that the game had been copied using MIG. As a result, the user’s Switch 2 became essentially unusable.
Fortunately, the story concluded on a more positive note. After contacting Nintendo customer support and providing evidence of their communication with the seller on Facebook Marketplace, the user’s console was eventually unlocked. In the end, the only loss incurred was the cost of the compromised second-hand game.
This incident serves as a cautionary tale: those considering the purchase of pre-owned physical games should exercise great care. In truth, there’s little a buyer can do to detect whether a cartridge has been duplicated with tools like MIG — making the process a gamble at best.
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