Apple Releases watchOS 5.2.1 With ECG Functionality for Additional European Countries
Apple today released watchOS 5.2.1, the sixth update to the watchOS 5 operating system that runs on modern Apple Watch models. watchOS 5.2.1 comes more than a month after the release of watchOS 5.2, an update that added AirPods 2 support.
watchOS 5.2.1 can be downloaded for free through the dedicated Apple Watch app on the iPhone by going to General -> Software Update. 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 5.2.1 update is minor in scale and focuses on performance improvements and bug fixes discovered since the release of watchOS 5.2. There were no changes discovered during the watchOS 5.2.1 beta testing period, and according to Apple's release notes, the update makes the ECG app and irregular heart rhythm notifications available in Croatia, Czech Republic, Iceland, Poland, and Slovakia.
This update includes new features, improvements and bug fixes:
- ECG app on Apple Watch Series 4 now available in Croatia, Czech Republic, Iceland, Poland and Slovakia
- Irregular heart rhythm notifications now available in Croatia, Czech Republic, Iceland, Poland and Slovakia
- Fixes an issue where the numbers on the Explorer face would not appear for some users
Work on watchOS 5 is set to wind down over the course of the next month as Apple transitions to watchOS 6, which is expected to be unveiled at the Worldwide Developers Conference in June.
Popular Stories
Apple hasn't updated the AirPods Pro since 2022, and the earbuds are due for a refresh. We're counting on a new model this year, and we've seen several hints of new AirPods tucked away in Apple's code. Rumors suggest that Apple has some exciting new features planned that will make it worthwhile to upgrade to the latest model.
Subscribe to the MacRumors YouTube channel for more videos.
Heal...
In 2020, Apple added a digital car key feature to its Wallet app, allowing users to lock, unlock, and start a compatible vehicle with an iPhone or Apple Watch. The feature is currently offered by select automakers, including Audi, BMW, Hyundai, Kia, Genesis, Mercedes-Benz, Volvo, and a handful of others, and it is set to expand further.
During its WWDC 2025 keynote, Apple said that 13...
Popular accessory maker Anker this month launched two separate recalls for its power banks, some of which may be a fire risk.
The first recall affects Anker PowerCore 10000 Power Banks sold between June 1, 2016 and December 31, 2022 in the United States. Anker says that these power banks have a "potential issue" with the battery inside, which can lead to overheating, melting of plastic...
Chase this week announced a series of new perks for its premium Sapphire Reserve credit card, and one of them is for a pair of Apple services.
Specifically, the credit card now offers complimentary annual subscriptions to Apple TV+ and Apple Music, a value of up to $250 per year.
If you are already paying for Apple TV+ and/or Apple Music directly through Apple, those subscriptions will...
Apple's next-generation iPhone 17 Pro and iPhone 17 Pro Max are around three months away, and there are plenty of rumors about the devices.
Apple is expected to launch the iPhone 17, iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max in September this year.
Below, we recap key changes rumored for the iPhone 17 Pro models:Aluminum frame: iPhone 17 Pro models are rumored to have an...
Apple is developing a MacBook with the A18 Pro chip, according to findings in backend code uncovered by MacRumors.
Earlier today, Apple analyst Ming-Chi Kuo reported that Apple is planning to launch a low-cost MacBook powered by an iPhone chip. The machine is expected to feature a 13-inch display, the A18 Pro chip, and color options that include silver, blue, pink, and yellow.
MacRumors...
Apple is planning to launch a low-cost MacBook powered by an iPhone chip, according to Apple analyst Ming-Chi Kuo.
In an article published on X, Kuo explained that the device will feature a 13-inch display and the A18 Pro chip, making it the first Mac powered by an iPhone chip. The A18 Pro chip debuted in the iPhone 16 Pro last year. To date, all Apple silicon Macs have contained M-series...
Apple last month announced the launch of CarPlay Ultra, the long-awaited next-generation version of its CarPlay software system for vehicles.
There was news this week about which automakers will and won't offer CarPlay Ultra, and we have provided an updated list below.
CarPlay Ultra is currently limited to newer Aston Martin vehicles in the U.S. and Canada. Fortunately, if you cannot...
Apple will finally deliver the Apple Watch Ultra 3 sometime this year, according to analyst Jeff Pu of GF Securities Hong Kong (via @jukanlosreve).
The analyst expects both the Apple Watch Series 11 and Apple Watch Ultra 3 to arrive this year (likely alongside the new iPhone 17 lineup, if previous launches are anything to go by), according to his latest product roadmap shared with...