Apple Says iOS 18.6.1 is Coming Today - MacRumors
Skip to Content

Apple Says iOS 18.6.1 is Coming Today

In case you missed it — this is the post for people who mainly only read headlines — Apple has announced that it will be releasing iOS 18.6.1 and watchOS 11.6.1 later today. Apple shared this information in a press release on its Newsroom website.

Generic iOS 18
The software updates will re-enable the Blood Oxygen feature on Apple Watch Series 9, Series 10, and Ultra 2 models sold in the United States.

It is unclear if iOS 18.6.1 will include anything else, such as bug fixes or security patches. Overall, it is likely to be a minor update. Apple is now focused on iOS 26, which is deep into beta testing ahead of a general release in September.

Update: Apple has released iOS 18.6.1. There are no new security patches.

Related Forums: iOS 18, iPadOS 18

Popular Stories

Apple Event Logo

Apple to Release These 15 New Products Later This Year

Friday June 12, 2026 7:45 am PDT by
Apple's annual WWDC developers conference is drawing to a close, but there is still a lot to look forward to in the second half of the year. Apple is expected to release at least 15 more products later this year. Now that the more intelligent and personal version of Siri has finally arrived in beta, a full two years after Apple first previewed it at WWDC 2024, we should begin to see some new ...
Apple Lists 250 Changes Across iOS 27 and More Feature

Apple Shares List of 250 Changes Across iOS 27, macOS Golden Gate, and More

Wednesday June 10, 2026 1:34 pm PDT by
During its WWDC 2026 keynote on Monday, Apple briefly showed a slide with hundreds of new features and enhancements coming across iOS 27, macOS 27 Golden Gate, watchOS 27, tvOS 27, and visionOS 27. All of the software updates are currently available as developer betas, and they are expected to be released to all users in September. We already highlighted some of the key new features from the ...
liquid glass app icon

Apple Maps to Get These 10 New Features in iOS 27

Thursday June 11, 2026 5:45 am PDT by
Apple Maps is getting a range of new features in iOS 27, headlined by an upgraded Flyover experience that uses AI to improve the realism and detail of its aerial imagery. Flyover is a longstanding feature of Apple Maps and lets users explore more than 350 cities in 3D with detailed landmarks, roads, parks, and buildings. Apple described the enhanced Flyover in iOS 27 as combining aerial...

Top Rated Comments

WarmWinterHat Avatar
11 months ago

In this specific scenario, theyre def a patent troll. Sueing and getting functionality that millions of users paid for, removed, and holding us all
hostage to their whims.

Surprised there isnt a class action against them
No, they are not.

Patent troll (n) - Disparaging term for a person or company that hoards patents for the purpose of threatening alleged infringers with legal action.

They absolutely build and sell products using the patents they own. You and others may not like what they are doing, and I have issues with how steadfastly disagreeable they are with licensing, but they do not fit the definition in the slightest. This nonsense is completely Apple's fault.
Score: 11 Votes (Like | Disagree)
WarmWinterHat Avatar
11 months ago

Wow, did the patent troll finally give up? Thank god lol
They are not a patent troll, which doesn't produce anything. My company buys six figures of worth of Masimo SpO2 sensors per year.

..but to answer your question, no they did not. Apple is taking the readings on the watch and displaying on the iPhone only. You won't be able to view it on the watch before or after processing.
Score: 9 Votes (Like | Disagree)
WarmWinterHat Avatar
11 months ago

I was under the impression that they didn't even include the O2 hardware in the Series 10 in the USA because of the results of the patent lawsuit. Did they have the hardware in it just disabled in software?
Yes, sensor is there.
Score: 8 Votes (Like | Disagree)
11 months ago

Wow, blood ox back on line was certainly unexpected. (This could spark a wave of deferred initial purchases and upgrades*).

I wonder if Apple found that software workaround the Masimo patent(s), or if we will see in a regulatory filing (or press release) that a licensing or acquisition agreement has been reached.

(My understanding is that at least one of Maximo’s patents is scheduled to expire next year. If so, their window to extract revenue from it is closing).

* as for me I’ve stayed with my AW6, and as long as battery health (today 80%) hangs in, and it gets s/w updates, I’ll wait for BP or blood sugar, etc. despite a desire for an Ultra).
Its a work around. They are taking readings and completing the analysis on the phone. The Masimo patents pressumably were regarding doing the analysis on the watch directly.
Score: 8 Votes (Like | Disagree)
spartan1967 Avatar
11 months ago
Game changer for September’s sell in.
Score: 7 Votes (Like | Disagree)
Robert.Walter Avatar
11 months ago
Wow, blood ox back on line was certainly unexpected. (This could spark a wave of deferred initial purchases and upgrades*).

I wonder if Apple found that software workaround the Masimo patent(s), or if we will see in a regulatory filing (or press release) that a licensing or acquisition agreement has been reached.

(My understanding is that at least one of Maximo’s patents is scheduled to expire next year. If so, their window to extract revenue from it is closing).

* as for me I’ve stayed with my AW6, and as long as battery health (today 80%) hangs in, and it gets s/w updates, I’ll wait for BP or blood sugar, etc. despite a desire for an Ultra).
Score: 7 Votes (Like | Disagree)