Right after the Nintendo Switch 2 came out in early June, some users said their new consoles got banned. It looks like these bans link to using a tool called the MIG Flash cartridge.
This MIG Flash cartridge lets users copy game files to a microSD card and play them on the Switch 2. But it seems like Nintendo noticed this fast. Many people, including on sites like X (Twitter), say they can't use their consoles online anymore because they used this cartridge.
One user said they got banned even though they used the MIG Flash cartridge only with their own legal game copies. This hints that Nintendo might be using new ways to check if its hardware or games are messed with, no matter where the game files come from. This person warned others about the risk of getting banned if they use the MIG cartridge with the Switch 2.
So far, neither Nintendo nor the makers of the MIG Flash cartridge have said anything about these bans. But it's well-known that Nintendo has always been tough on digital theft and unauthorized changes to its consoles. These events show the company is still very strict about protecting its new Switch 2.