Because this was a flaw in common Nintendo network code, similar "stability" updates were released for Splatoon 2 , Super Mario Maker 2 , and ARMS at the same time. Gameplay Adjustments: Time Travelers Beware

Out-of-bounds read/write vulnerabilities and null pointer dereferencing could allow a malicious user to crash another player's game or even execute arbitrary code remotely during multiplayer sessions.

: Some community members have reported that certain shop inventories (like those of Saharah or Kicks) may now behave more predictably when time traveling, though these are unofficial observations. How to Stay "Fixed Better"

Let’s break down what this update actually did, why Error 206 was such a nightmare, and how the new fixes have made ACNH the definitive cozy gaming experience on the Switch.

Keep your island safe, and always back up your saves via JKSV before installing any NSP updates.

Animal Crossing: New Horizons 2.0.6 Update: What’s Actually Fixed?