Blood Oxygen not available on Apple Watch Ultra 2 after watchOS 18.6.1 update

Just got the notification that OS 18.6.1 (both phone and watch) were available. Read that it brought back Blood Oxygen to my Ultra 2. Did both updates, but when I run the watch app, it still says unavailable (as it has since it was removed). Thoughts?


[Re-Titled by Moderator]

Original Title: Blood Oxygen Ultra 2

Apple Watch Ultra 2, watchOS 11

Posted on Aug 14, 2025 11:47 AM

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Question marked as Top-ranking reply

Posted on Aug 15, 2025 11:28 AM

I did all the updates and still couldn't get O2 measurement until I ran the EKG. Of course this is ridiculous since it's not mentioned anywhere to do this. With as much as apple software engineers get paid they could do a LOT better

23 replies

Blood Oxygen not available on Apple Watch Ultra 2 after watchOS 18.6.1 update

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