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Apple Watch 12 and Ultra 4 plagued by restart bug

Users of the Apple Watch 12 and Ultra 4 are reporting unexpected restarts of their watches, possibly due to a bug in the Neural Engine.

Multiple users are reporting on various forums that their Apple Watch 12 and Ultra 4 are experiencing 'kernel panic', leading to unexpected restarts. This issue appears to occur in various situations, from wrist movements to making calls and Siri interactions.

The problem is believed to be related to the Neural Engine, which is responsible for local AI calculations. Diagnostic data suggests that this chip briefly freezes, after which the kernel fails and the watch restarts.

The issues occur both before and after the initial update. Apple has not yet officially responded to the reports. It is unclear whether the recent beta version of watchOS 27.2, used by testers, has already resolved the problem, although some indicate they no longer experience issues.

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