James Martin / CNET
Apple wants to release WatchOS 5.1
.2. This app also includes a critical feature for Apple Watch Series 4 owners – the ECG app. The app allows the watch to act as an electrocardiogram, which will abbreviate to ECG but usually ECG. It is intended to allow users to monitor their heart rhythm using a more granular method, and refer the wearer to a physician for any potential medical issues, at least in the US. It's FDA-cleared.
CNET's Vanessa Hand Orellana had a chance to try out the app early and surprisingly, it did not find anything – her experience is well worth reading, or you can watch her video below.
The update process is simple, but does not take some time. Here's what you need to know.
So long, original Apple Watch
For the first time, Apple is not opting to update all Apple Watch models. Only the original Apple Watch is left out but that's probably a frustrating omission – depending on how much you spend on your Apple Watch. Remember, there were models that cost $ 17,000. Ouch.
The models that will receive WatchOS 5 are:
The original Apple Watch did not have a series number. If you're unsure which model you have, Apple's FAQ page walks you through figuring out
Grab your charger
Update your iPhone to iOS 12.1.1 . Otherwise, WatchOS 5.1.2 will not show up as an available update.
Once your iPhone is running iOS 12.1.1, place your Apple Watch on its charger, and make sure it has a batch of at least 50 percent.
So, you need to have your iPhone near the watch in the process for the update. 30 minutes or so.
OK, with your phone updated and the watch charging, open the Watch app on your iPhone. Scroll down and select > Software Update .
After a few seconds, your phone asks for the update and a letter to you Download and Install the update. Tap it, and enter your passcode when prompted. You may also want to begin your passcode on the watch itself.
The update will begin downloading and installing in the background.
During the update, your watch will flash on and off, showing the Apple most of the time.
Originally published Sept. 13.
Update, Dec. 6 : Added information about the ECG app.
Apple Watch Series 4 review : Bigger, faster, even more health-conscious.
How to enable case detection on Apple Watch Series 4 : Be careful not to accidentally trigger it.