Apple Releases watchOS 6.1.3 Update With Heart Rhythm Notification Bug Fix - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Apple Releases watchOS 6.1.3 Update With Heart Rhythm Notification Bug Fix

Apple today released watchOS 6.1.3, the fifth update to the watchOS 6 operating system designed to run on modern Apple Watch models. watchOS 6.1.3 comes three weeks after the release of watchOS 6.1.2.

watchOS 6.1.3 can be downloaded for free through the dedicated Apple Watch app on the iPhone by going to General > Software Update.

watchos6ewatchfaces
To install the new software, the Apple Watch needs to have at least 50 percent battery, it needs to be placed on a charger, and it needs to be in range of the iPhone.

The watchOS 6.1.3 update includes important bug fixes, addressing an issue that could prevent the irregular heart rhythm notification feature from working properly for Apple Watch owners in Iceland.

Apple has also released watchOS 5.3.5 for Apple Watch models not able to run watchOS 6 due to the use of an older iPhone.

Related Roundup: Apple Watch 11

Popular Stories

3 4 24 Sport Band Refresh Feature

Sketchy Rumor Claims Apple Watch Series 12 Could Introduce Sensor in Band

Friday July 3, 2026 8:54 am PDT by
The Apple Watch Series 12 could ship with a new health sensor built directly into one of its bands, according to a sketchy rumor from a known leaker. The leaker known as "Kosutami" says the sensor will be injection-molded into a silicone band, and only a silicone band, apparently because Apple has not yet solved how to embed similar hardware in bands made from other materials. No detail was...
watchos 27

Siri AI Comes to Apple Watch in watchOS 27 Beta 3

Monday July 6, 2026 1:24 pm PDT by
With watchOS 27 beta 3, Apple added support for Siri AI and the Siri app, so Apple Watch users can now use the features right from their wrist. Apple said Siri AI would be coming to the watch back when watchOS 27 was first introduced, but the feature wasn't live until now. The Dynamic App Grid that pops up when the Digital Crown is pressed displays the Siri app in the center, and the...
Apple Watch Series 10 Jet Black

Apple Watch Series 13 Rumored to Mark the End of an Era

Wednesday July 8, 2026 1:29 pm PDT by
While the Apple Watch Series 12 is still a few months away, a new rumor suggests that next year's Apple Watch Series 13 will mark the end of an era. According to a recent post from a known leaker on the Chinese social media platform Weibo, the Apple Watch will be receiving a major redesign next year, and this will apparently include a new way of attaching bands to the watch. As a result, the ...

Top Rated Comments

thadoggfather Avatar
84 months ago


The watchOS 6.1.3 update includes important bug fixes, addressing an issue that could prevent the irregular heart rhythm notification feature from working properly for Apple Watch owners in Iceland.

Strangely specific geographical bug
Score: 17 Votes (Like | Disagree)
84 months ago
Acknowledgement Apple has Icelandic users - wow! Now if only they would give us Apple Music, iTunes Store, Apple TV+, Books, iCloud Music Library, Movie Rentals, iTunes Match and every other feature everyone else seems to have 🤔
Score: 13 Votes (Like | Disagree)
Hodar1 Avatar
84 months ago
My cellular plan has "unlimited Data", and as these iOS updates are not horrendously large - I wish we could opt out of the manditory Wi-Fi download requirement.
Score: 10 Votes (Like | Disagree)
84 months ago
I'm still pining for custom watch faces. So exasperating - why can't we have that?
Score: 10 Votes (Like | Disagree)
Toratek Avatar
84 months ago
So.... an update for Bjork?
Score: 10 Votes (Like | Disagree)
Expos of 1969 Avatar
84 months ago

ummm, where did you get that? I responded that you can opt out of automatic updates on both Apple Watch and iPhone. quotes from the posts: " I wish we could opt out" and "You cannot even opt out when updating your phone". So yah, you can opt out, pretty easily.

Update using only your mobile data? I have never even tried, so while I would assume so, I have no idea. I don't have unlimited on my mobile, so I use wifi for all updates.

oops, my bad. Now I see what you said. Never mind!
Never mind?? Perhaps an apology for you saying "Do you really know what you are talking about?" is in order?
Score: 8 Votes (Like | Disagree)

🔗 Related Apple News & Rumors

Stay updated with the latest Apple ecosystem news and verified rumors