Users report random reboots on Apple Watch Series 12 and Ultra 4 due to Neural Engine timeouts
According to cnBeta, some users report random reboots on Apple Watch Series 12 and Ultra 4 shortly after launch, with system crash logs pointing to Apple Neural Engine timeouts and kernel panics. The issues affect devices running watchOS 27.0 or the initial day-one update, and have occurred on both original and replacement units, suggesting a potential underlying hardware or software problem. Prices and launch details are cited as Series 12 at $399 and Ultra 4 at $799, with a September 18 release date.
Key facts
- 01At least four users provided complete system crash logs showing Neural Engine timeouts.
- 02Reboots occur during a variety of activities, including using Siri, editing watch faces, maps, App Store, calls, and workouts.
- 03Some users factory reset to a new device or received a replacement unit, yet random reboots persisted.
- 04Logs indicate Neural Engine timeout followed by watchdog/kernel panic, suggesting a deeper issue beyond app crashes.
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