{"id":61410,"date":"2026-09-24T13:42:11","date_gmt":"2026-09-24T13:42:11","guid":{"rendered":"https:\/\/www.threatshub.org\/blog\/is-your-apple-watch-12-or-ultra-4-randomly-restarting-heres-the-fix\/"},"modified":"2026-09-24T13:42:11","modified_gmt":"2026-09-24T13:42:11","slug":"is-your-apple-watch-12-or-ultra-4-randomly-restarting-heres-the-fix","status":"publish","type":"post","link":"https:\/\/www.threatshub.org\/blog\/is-your-apple-watch-12-or-ultra-4-randomly-restarting-heres-the-fix\/","title":{"rendered":"Is your Apple Watch 12 or Ultra 4 randomly restarting? Here\u2019s the fix"},"content":{"rendered":"<h3 class=\"wp-block-heading\">ZDNET\u2019s key takeaways<\/h3>\n<ul class=\"wp-block-list\">\n<li>The Apple Watch Series 12 and Ultra 4 may randomly restart.<\/li>\n<li>Apple has rolled out an update to watchOS to fix this bug.<\/li>\n<li>To fix the glitch, install watchOS 27.0.1 from your iPhone or watch.<\/li>\n<\/ul>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n<p>I\u2019ve been enjoying my <a href=\"https:\/\/www.zdnet.com\/business\/apple-watch-series-12-heart-rate-accuracy-test\/\">Apple Watch Series 12<\/a> since picking it up last week. But one thing I haven\u2019t enjoyed is the random restarts. So far, I\u2019ve run into this issue twice. Both times I was tweaking a setting on the watch, only for it to unexpectedly shut down and restart on its own without any warning. And I\u2019m not alone. <\/p>\n<p>But thankfully, there\u2019s now a fix for this.<\/p>\n<h2 class=\"wp-block-heading\">WatchOS 27.0.1 update fixes the issue<\/h2>\n<p>With users of the Series 12 or Ultra 4 reporting this restart problem, Apple has issued a quick fix in the form of an update. Released late Wednesday, <a data-wp-interactive=\"zd\/analytics\" data-wp-on--click=\"actions.trackClick\" data-zd-otc=\"1\" data-zd-track-action-outcome=\"outbound_click\" data-zd-track-event=\"select_item,view_item\" data-zd-track-item-category=\"MANUAL-OFFER-NO-PRODUCT-CATALOG-ENTRY\" data-zd-track-item-list-index=\"null\" data-zd-track-item-name=\"https:\/\/support.apple.com\/en-us\/149077\" data-zd-track-location-id=\"BODY\" data-zd-track-module=\"LINK\" data-zd-track-outbound-url=\"https:\/\/cc.zdnet.com\/v1\/otc\/00hQi47eqnEWQ6T9d4QLBUc?url=https%3A%2F%2Fsupport.apple.com%2Fen-us%2F149077&amp;u=https%3A%2F%2Fwww.zdnet.com%2Ftech%2Fapple-watch-series-12-ultra-4-random-restarts-fix-update%2F\" data-zd-track-page-uuid=\"1330046|3\" data-zd-track-raw-outbound-url=\"https:\/\/cc.zdnet.com\/v1\/otc\/00hQi47eqnEWQ6T9d4QLBUc?url=https%3A%2F%2Fsupport.apple.com%2Fen-us%2F149077&amp;u=https%3A%2F%2Fwww.zdnet.com%2Ftech%2Fapple-watch-series-12-ultra-4-random-restarts-fix-update%2F\" data-zd-track-raw-url=\"https:\/\/support.apple.com\/en-us\/149077\" rel=\"nofollow noopener sponsored\" href=\"https:\/\/cc.zdnet.com\/v1\/otc\/00hQi47eqnEWQ6T9d4QLBUc?url=https%3A%2F%2Fsupport.apple.com%2Fen-us%2F149077&amp;u=https%3A%2F%2Fwww.zdnet.com%2Ftech%2Fapple-watch-series-12-ultra-4-random-restarts-fix-update%2F\">WatchOS 27.0.1<\/a> is supposed to squash this particularly nasty bug. I just ran the update this morning, so it\u2019s too soon to tell if it does the trick, but Apple usually gets these right.<\/p>\n<p><strong>Also: <a href=\"https:\/\/www.zdnet.com\/tech\/apple-watch-series-12-review-finally-the-health-tracker-ive-been-waiting-for\/\">Apple Watch Series 12 review: Finally, the health tracker I\u2019ve been waiting for<\/a><\/strong><\/p>\n<p>A <a data-wp-interactive=\"zd\/analytics\" data-wp-on--click=\"actions.trackClick\" data-zd-otc=\"1\" data-zd-track-action-outcome=\"outbound_click\" data-zd-track-event=\"select_item,view_item\" data-zd-track-item-category=\"MANUAL-OFFER-NO-PRODUCT-CATALOG-ENTRY\" data-zd-track-item-list-index=\"null\" data-zd-track-item-name=\"https:\/\/discussions.apple.com\/thread\/256360354?sortBy=rank\" data-zd-track-location-id=\"BODY\" data-zd-track-module=\"LINK\" data-zd-track-outbound-url=\"https:\/\/cc.zdnet.com\/v1\/otc\/00hQi47eqnEWQ6T9d4QLBUc?url=https%3A%2F%2Fdiscussions.apple.com%2Fthread%2F256360354%3FsortBy%3Drank&amp;u=https%3A%2F%2Fwww.zdnet.com%2Ftech%2Fapple-watch-series-12-ultra-4-random-restarts-fix-update%2F\" data-zd-track-page-uuid=\"1330046|3\" data-zd-track-raw-outbound-url=\"https:\/\/cc.zdnet.com\/v1\/otc\/00hQi47eqnEWQ6T9d4QLBUc?url=https%3A%2F%2Fdiscussions.apple.com%2Fthread%2F256360354%3FsortBy%3Drank&amp;u=https%3A%2F%2Fwww.zdnet.com%2Ftech%2Fapple-watch-series-12-ultra-4-random-restarts-fix-update%2F\" data-zd-track-raw-url=\"https:\/\/discussions.apple.com\/thread\/256360354?sortBy=rank\" rel=\"nofollow noopener sponsored\" href=\"https:\/\/cc.zdnet.com\/v1\/otc\/00hQi47eqnEWQ6T9d4QLBUc?url=https%3A%2F%2Fdiscussions.apple.com%2Fthread%2F256360354%3FsortBy%3Drank&amp;u=https%3A%2F%2Fwww.zdnet.com%2Ftech%2Fapple-watch-series-12-ultra-4-random-restarts-fix-update%2F\">conversation thread on Apple\u2019s Support Community<\/a> describes the experience that some owners of either watch have encountered. The person who kicked off this particular discussion said that they checked the diagnostic logs after their watch suddenly restarted. There, they found an entry for a panic-full file referring to a timeout in the Neural Engine.<\/p>\n<p>The Neural Engine is a piece of hardware on the watch designed to process tasks related to AI, security, and other features. With the timeout, the watch automatically restarts itself.<\/p>\n<h2 class=\"wp-block-heading\">How to check your Apple Watch Diagnostic Logs<\/h2>\n<p>If your Series 12 or Ultra 4 has also been restarting and you want to check the logs, open the Watch app on your iPhone. Go to General, swipe down the screen, and then select Diagnostics Logs. Look for an entry for a panic-full file and select it to view the results.<\/p>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" height=\"576\" width=\"1024\" src=\"https:\/\/www.zdnet.com\/wp-content\/uploads\/sites\/3\/Apple-watchOS-2701.jpg?w=864\" alt=\"WatchOS 27.0.1 fixes a bug that causes the Series 12 and Ultra 4 to restart.\" class=\"wp-image-1330047\" srcset=\"https:\/\/www.zdnet.com\/wp-content\/uploads\/sites\/3\/Apple-watchOS-2701.jpg 3000w, https:\/\/www.zdnet.com\/wp-content\/uploads\/sites\/3\/Apple-watchOS-2701.jpg?resize=300,169 300w, https:\/\/www.zdnet.com\/wp-content\/uploads\/sites\/3\/Apple-watchOS-2701.jpg?resize=768,432 768w, https:\/\/www.zdnet.com\/wp-content\/uploads\/sites\/3\/Apple-watchOS-2701.jpg?resize=1024,576 1024w, https:\/\/www.zdnet.com\/wp-content\/uploads\/sites\/3\/Apple-watchOS-2701.jpg?resize=1536,864 1536w, https:\/\/www.zdnet.com\/wp-content\/uploads\/sites\/3\/Apple-watchOS-2701.jpg?resize=2048,1152 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><span class=\"zd-image-credit\">Lance Whitney\/ZDNET<\/span><\/figure>\n<h2 class=\"wp-block-heading\">How to update your Apple Watch<\/h2>\n<p>To update your watch, open the Watch app on your phone, go to General, select Software Update, and then download 27.0.1. To do this directly on your watch, head to Settings, select General, and then tap Software Update. Tap the option to download and install the new update.<\/p>\n<p><strong>Also: <a href=\"https:\/\/www.zdnet.com\/business\/my-5-favorite-features-in-watchos-27-and-how-they-work\/\">My favorite 5 Watch OS 27 upgrades \u2013 and how to try them yourself<\/a><\/strong><\/p>\n<p>Apple\u2019s <a data-wp-interactive=\"zd\/analytics\" data-wp-on--click=\"actions.trackClick\" data-zd-otc=\"1\" data-zd-track-action-outcome=\"outbound_click\" data-zd-track-event=\"select_item,view_item\" data-zd-track-item-category=\"MANUAL-OFFER-NO-PRODUCT-CATALOG-ENTRY\" data-zd-track-item-list-index=\"null\" data-zd-track-item-name=\"https:\/\/support.apple.com\/en-us\/149077\" data-zd-track-location-id=\"BODY\" data-zd-track-module=\"LINK\" data-zd-track-outbound-url=\"https:\/\/cc.zdnet.com\/v1\/otc\/00hQi47eqnEWQ6T9d4QLBUc?url=https%3A%2F%2Fsupport.apple.com%2Fen-us%2F149077&amp;u=https%3A%2F%2Fwww.zdnet.com%2Ftech%2Fapple-watch-series-12-ultra-4-random-restarts-fix-update%2F\" data-zd-track-page-uuid=\"1330046|3\" data-zd-track-raw-outbound-url=\"https:\/\/cc.zdnet.com\/v1\/otc\/00hQi47eqnEWQ6T9d4QLBUc?url=https%3A%2F%2Fsupport.apple.com%2Fen-us%2F149077&amp;u=https%3A%2F%2Fwww.zdnet.com%2Ftech%2Fapple-watch-series-12-ultra-4-random-restarts-fix-update%2F\" data-zd-track-raw-url=\"https:\/\/support.apple.com\/en-us\/149077\" rel=\"nofollow noopener sponsored\" href=\"https:\/\/cc.zdnet.com\/v1\/otc\/00hQi47eqnEWQ6T9d4QLBUc?url=https%3A%2F%2Fsupport.apple.com%2Fen-us%2F149077&amp;u=https%3A%2F%2Fwww.zdnet.com%2Ftech%2Fapple-watch-series-12-ultra-4-random-restarts-fix-update%2F\">support page for WatchOS 27.0.1<\/a> refers to bug fixes, as in plural, so there may be other fixes in this update. For now, though, it\u2019s apparently limited to the Series 12 and Ultra 4. While any glitch of this severity is concerning and annoying, at least Apple responded relatively quickly with the necessary patch.<\/p>\n<section class=\"zd-disqus\" data-zd-disqus data-disqus-shortname=\"zdnet-1\" data-disqus-identifier=\"1330046\" data-disqus-url=\"https:\/\/www.zdnet.com\/tech\/apple-watch-series-12-ultra-4-random-restarts-fix-update\/\" data-disqus-title=\"Is your Apple Watch 12 or Ultra 4 randomly restarting? Here\u2019s the fix\" data-disqus-api-key=\"y0Dp0T6itn9rbTvSf2xkzkhaUL7c5EJsmaWF3XYBqXNz8GHH7wSX1nXi4qzdihWV\" data-disqus-show-label=\"Show Comments\" data-disqus-hide-label=\"Hide Comments\"> <button type=\"button\" class=\"zd-disqus__toggle\" data-zd-disqus-toggle aria-expanded=\"false\"> <span class=\"zd-disqus__toggle-text\" data-zd-disqus-label>Show Comments<\/span> <svg class=\"zd-disqus__toggle-icon\" width=\"14\" height=\"14\" viewBox=\"0 0 14 14\" aria-hidden=\"true\" focusable=\"false\"> <path d=\"M7 1 V12.5 M2.5 8 L7 12.5 L11.5 8\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" \/> <\/svg> <\/button> <\/p>\n<div class=\"zd-disqus__panel\" data-zd-disqus-panel hidden>\n<p class=\"zd-disqus__consent\" data-zd-disqus-consent hidden>Please accept cookies to view the comments powered by Disqus.<\/p>\n<\/p><\/div>\n<p> <noscript>Please enable JavaScript to view the comments powered by Disqus.<\/noscript> <\/section>\n<div class=\"articleAuthorBioFooter-container\">\n<div class=\"articleAuthorBioFooter\">\n<div class=\"articleAuthorBioFooter_body\">\n<div class=\"articleAuthorBioFooter_nameBlock\">\n<div class=\"c-cmsImage articleAuthorBioFooter_image\"> <picture class=\"c-cmsImage_image\"> <img alt=\"Lance Whitney\" src=\"https:\/\/www.zdnet.com\/wp-content\/uploads\/sites\/3\/lance-31.png?w=64\" srcset=\"https:\/\/www.zdnet.com\/wp-content\/uploads\/sites\/3\/lance-31.png?w=128 2x\" class=\"avatar avatar-64 photo\" height=\"64\" width=\"64\" loading=\"lazy\" decoding=\"async\"> <\/picture> <\/div>\n<div class=\"articleAuthorBioFooter_nameText\">\n<div class=\"articleAuthorBioFooter_name\"> <span>Lance Whitney<\/span> <\/div>\n<p> <span class=\"articleAuthorBioFooter_credentials\"> <\/span> <\/div>\n<\/p><\/div>\n<p> <span class=\"articleAuthorBioFooter_bio has-bio\"> <span>Lance Whitney is a technology journalist with an IT background. He&#8217;s written for TechRepublic, PCMag, Macworld, and Time, among others, He also teaches classes in AI, cybersecurity, and social media.<\/span> <a href=\"https:\/\/www.zdnet.com\/meet-the-team\/lancewhitney\/\" rel=\"author\" class=\"articleAuthorBioFooter_link\"> See full bio <\/a> <\/span> <\/div>\n<p> <!-- Latest Articles Section --> <\/p>\n<div class=\"articleAuthorBioFooter_latest\">\n<h3 class=\"articleAuthorBioFooter_latestTitle\"> The Latest from Lance <\/h3>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- .articleAuthorBioFooter-container --><br \/>\nREAD MORE <a href=\"https:\/\/www.zdnet.com\/tech\/apple-watch-series-12-ultra-4-random-restarts-fix-update\/\">HERE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Some owners, including me, have reported sudden shutdowns while adjusting Apple Watch settings. READ MORE HERE&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","footnotes":""},"categories":[62],"tags":[],"class_list":["post-61410","post","type-post","status-publish","format-standard","hentry","category-zdnet-security"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Is your Apple Watch 12 or Ultra 4 randomly restarting? Here\u2019s the fix 2026 | ThreatsHub Cybersecurity News<\/title>\n<meta name=\"description\" content=\"ThreatsHub Cybersecurity News | ThreatsHub.org | Cloud Security &amp; Cyber Threats Analysis Hub. 100% Free OSINT Threat Intelligent and Cybersecurity News.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.threatshub.org\/blog\/is-your-apple-watch-12-or-ultra-4-randomly-restarting-heres-the-fix\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Is your Apple Watch 12 or Ultra 4 randomly restarting? 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