Nintendo is banning online services on Switch 2 systems that use the Mig cartridge
Briefly

Nintendo is enforcing strict bans on Switch 2 consoles for users who employ Mig cartridges, which can play both pirated games and personal backups. The error code 2134-4508 signals a permanent ban from online services for these consoles. While the Mig product makers advocate for legal backup usage, Nintendo maintains that any use of these devices violates user agreements. Users have reported difficulties in disconnecting their accounts from banned consoles, showing the severe implications of such bans on gaming experience.
Whether you're pirating games, or playing copies of games you own, Nintendo thinks you're guilty.
Nintendo's stance on the matter is broad: It considers both to be violations of its user agreements.
Running games on the Mig requires you to download them from others who have dumped files off of cartridges.
The makers of the Mig cartridge have taken reasonable efforts to distance itself from what a majority of buyers will likely do.
Read at The Verge
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