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Apple released watchOS 10.6.1 and tvOS 17.6.1 on August 19, 2024, as maintenance updates after watchOS 10.6 and tvOS 17.6. Apple explicitly said watchOS 10.6.1 fixed an issue that could prevent access to Apple Fitness+. Apple did not publish equally specific notes for tvOS 17.6.1, so its exact changes remain undocumented. These versions are historical now; in 2026, install the latest compatible software offered on your devices rather than trying to locate these old builds.
What changed in the August 19, 2024 releases?
watchOS 10.6.1 and tvOS 17.6.1 were small bug-fix releases, not feature upgrades. They followed the July 29, 2024 releases of watchOS 10.6 and tvOS 17.6 and arrived before the major watchOS 11 and tvOS 18 generations.
| Update | Build | Compatible hardware | Documented change |
|---|---|---|---|
| watchOS 10.6.1 | 21U580 | Apple Watch Series 4 and later | Apple said it fixed an issue that could prevent access to Apple Fitness+ |
| tvOS 17.6.1 | 21M80 | Apple TV HD and all Apple TV 4K models | Apple published no comparable detailed public fix description |
Apple’s security-release listing records both versions and their hardware support at Apple’s security updates page. That page lists no published CVE entries for either release. “No published CVEs” does not prove that no internal security hardening occurred; it only describes what Apple publicly catalogued.
What watchOS 10.6.1 fixed for Fitness+
The confirmed fix was access-related. Apple said watchOS 10.6.1 addressed an issue that could prevent access to Apple Fitness+. It did not add a new workout catalog, redesign Fitness+, or introduce a new Apple Watch feature.
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![Apple Watch Series 11 [GPS 42mm] Smartwatch with Rose Gold Aluminum Case with Light Blush Sport Band - S/M. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant](https://m.media-amazon.com/images/I/31caPPnRysL._SL160_.jpg)
- A FULL-FEATURED HEALTH TRACKER—Apple Watch Series 11 gives you invaluable insights about your body, right from your wrist. Take an ECG anytime* and get alerts for a high and low heart rate or an irregular rhythm*—so you can stay closer to your heart. You can also view your overnight health tracking metrics with the Vitals app* and be notified of possible sleep apnea.*
- KNOW YOUR SLEEP SCORE—With advanced sleep tracking, Series 11 gives you a daily sleep score. It’s an easy way to help measure and understand the quality of your sleep, so you can make it more restorative.
- GET HYPERTENSION NOTIFICATIONS—Did you know that Series 11 can spot signs of chronic high blood pressure? By analyzing how your blood vessels respond to beats of the heart, it can notify you of possible hypertension.*
- SAFETY FEATURES—A smartwatch that puts your safety first. Series 11 can detect a hard fall or severe car crash, automatically help connect you with emergency services, and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
- A POWERFUL FITNESS TRACKER—With advanced metrics and motivating features like Pacer, Heart Rate Zones, training load, and Workout Buddy powered by Apple Intelligence from your nearby iPhone*—Series 11 is made to help everyone stay active, from runners and hikers to strength-training enthusiasts.
The wording does not establish one universal failure mode. It does not say that every Fitness+ problem, workout type, account state, or connection error was resolved. If your watchOS 10.6 installation left Fitness+ unavailable, updating was the appropriate 2024 remedy.
Contemporary reporting reproduces Apple’s release wording, including the 9to5Mac report, Cult of Mac coverage, and Macwelt’s report.
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![Apple Watch SE 3 [GPS 40mm] Smartwatch with Starlight Aluminum Case with Starlight Sport Band - S/M. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant](https://m.media-amazon.com/images/I/31YiTby0pOL._SL160_.jpg)
- GET SMARTER HEALTH INSIGHTS—Apple Watch SE 3 is an advanced health tracker that helps you better understand your body. The smartwatch sends alerts for an irregular heart rhythm, or an unusually high or low heart rate.* You can view your overnight health tracking metrics with the Vitals app,* track your sleep score, and get sleep apnea notifications.*
- A GREAT FITNESS TRACKER—SE 3 can track your workouts in a healthy number of ways—from running and strength training to simply achieving your 10K steps a day. With real-time metrics and Workout Buddy powered by Apple Intelligence from your nearby iPhone,* you’ll hit your goals like never before.
- KEEP HELP CLOSE AT HAND—SE 3 is a smartwatch that can detect a hard fall or severe car crash and automatically help connect you to emergency services and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
- WOMEN’S HEALTH INSIGHTS—SE 3 has advanced sensors that track your wrist temperature while you sleep. With this smartwatch, you can log your periods and symptoms, get period predictions, and get notified of cycle deviations.*
- GREAT BATTERY LIFE AND FASTER CHARGING—Enjoy a smartwatch with all-day, 18-hour battery life* from sunup to sundown. Then charge up to twice as fast as SE 2* and get up to 8 hours of battery in just 15 minutes.*
Did tvOS 17.6.1 fix the same Fitness+ problem?
That conclusion is plausible but not confirmed. Apple released tvOS 17.6.1 alongside the watchOS patch, and Fitness+ can involve an Apple TV, an Apple Watch, and an iPhone working together. Some coverage therefore inferred that the Apple TV update might address a related side of the problem.
However, Apple did not publish an equivalent detailed tvOS release note. The defensible statement is: Apple explicitly documented the Fitness+ access fix for watchOS 10.6.1, while the precise changes in tvOS 17.6.1 were unspecified. TidBITS, 9to5Mac, and iCulture describe the releases without establishing a specific Apple TV Fitness+ fix.
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![Apple Watch Series 11 [GPS 46mm] Smartwatch with Jet Black Aluminum Case with Black Sport Band - M/L. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant](https://m.media-amazon.com/images/I/416RQ0rtsUL._SL160_.jpg)
- A FULL-FEATURED HEALTH TRACKER—Apple Watch Series 11 gives you invaluable insights about your body, right from your wrist. Take an ECG anytime* and get alerts for a high and low heart rate or an irregular rhythm*—so you can stay closer to your heart. You can also view your overnight health tracking metrics with the Vitals app* and be notified of possible sleep apnea.*
- KNOW YOUR SLEEP SCORE—With advanced sleep tracking, Series 11 gives you a daily sleep score. It’s an easy way to help measure and understand the quality of your sleep, so you can make it more restorative.
- GET HYPERTENSION NOTIFICATIONS—Did you know that Series 11 can spot signs of chronic high blood pressure? By analyzing how your blood vessels respond to beats of the heart, it can notify you of possible hypertension.*
- SAFETY FEATURES—A smartwatch that puts your safety first. Series 11 can detect a hard fall or severe car crash, automatically help connect you with emergency services, and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
- A POWERFUL FITNESS TRACKER—With advanced metrics and motivating features like Pacer, Heart Rate Zones, training load, and Workout Buddy powered by Apple Intelligence from your nearby iPhone*—Series 11 is made to help everyone stay active, from runners and hikers to strength-training enthusiasts.
Which devices could install them?
- watchOS 10.6.1: Apple Watch Series 4 and later. Apple Watch Series 3 and earlier were not compatible.
- tvOS 17.6.1: Apple TV HD and every Apple TV 4K model.
These are the compatibility boundaries for the 2024 releases, not a guarantee that a device can run current 2026 software. A device already on a later operating-system branch may not offer either historical version.
How to update an Apple Watch
- Put the watch on its charger and keep it near the paired iPhone.
- Open the Watch app on the iPhone.
- Tap My Watch, then General, then Software Update.
- Download and install the update shown by Apple.
In 2024, the relevant target was watchOS 10.6.1. In 2026, follow Apple’s current software-update guidance and install the latest compatible watchOS offered instead of searching for 10.6.1.
Rank #4
![Apple Watch SE 3 [GPS 40mm] Smartwatch with Midnight Aluminum Case with Midnight Sport Band - S/M. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant](https://m.media-amazon.com/images/I/31Gq8SToFJL._SL160_.jpg)
- GET SMARTER HEALTH INSIGHTS—Apple Watch SE 3 is an advanced health tracker that helps you better understand your body. The smartwatch sends alerts for an irregular heart rhythm, or an unusually high or low heart rate.* You can view your overnight health tracking metrics with the Vitals app,* track your sleep score, and get sleep apnea notifications.*
- A GREAT FITNESS TRACKER—SE 3 can track your workouts in a healthy number of ways—from running and strength training to simply achieving your 10K steps a day. With real-time metrics and Workout Buddy powered by Apple Intelligence from your nearby iPhone,* you’ll hit your goals like never before.
- KEEP HELP CLOSE AT HAND—SE 3 is a smartwatch that can detect a hard fall or severe car crash and automatically help connect you to emergency services and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
- WOMEN’S HEALTH INSIGHTS—SE 3 has advanced sensors that track your wrist temperature while you sleep. With this smartwatch, you can log your periods and symptoms, get period predictions, and get notified of cycle deviations.*
- GREAT BATTERY LIFE AND FASTER CHARGING—Enjoy a smartwatch with all-day, 18-hour battery life* from sunup to sundown. Then charge up to twice as fast as SE 2* and get up to 8 hours of battery in just 15 minutes.*
How to update an Apple TV
- Open Settings on Apple TV.
- Choose System, then Software Updates.
- Select Update Software.
- Choose Download and Install when an update appears.
- Leave the Apple TV connected to power until installation finishes.
To enable automatic updates, use Settings → System → Software Updates → Automatically Update. Apple documents these controls at Apple TV software updates.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.If Fitness+ still does not work
Installing the patch addressed one watchOS access issue, but Fitness+ also depends on account configuration, supported hardware, software versions, network access, and regional availability. Work through these checks in order:
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![Apple Watch Series 11 [GPS 42mm] Smartwatch with Jet Black Aluminum Case with Black Sport Band - S/M. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant](https://m.media-amazon.com/images/I/41s72HIk5TL._SL160_.jpg)
- A FULL-FEATURED HEALTH TRACKER—Apple Watch Series 11 gives you invaluable insights about your body, right from your wrist. Take an ECG anytime* and get alerts for a high and low heart rate or an irregular rhythm*—so you can stay closer to your heart. You can also view your overnight health tracking metrics with the Vitals app* and be notified of possible sleep apnea.*
- KNOW YOUR SLEEP SCORE—With advanced sleep tracking, Series 11 gives you a daily sleep score. It’s an easy way to help measure and understand the quality of your sleep, so you can make it more restorative.
- GET HYPERTENSION NOTIFICATIONS—Did you know that Series 11 can spot signs of chronic high blood pressure? By analyzing how your blood vessels respond to beats of the heart, it can notify you of possible hypertension.*
- SAFETY FEATURES—A smartwatch that puts your safety first. Series 11 can detect a hard fall or severe car crash, automatically help connect you with emergency services, and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
- A POWERFUL FITNESS TRACKER—With advanced metrics and motivating features like Pacer, Heart Rate Zones, training load, and Workout Buddy powered by Apple Intelligence from your nearby iPhone*—Series 11 is made to help everyone stay active, from runners and hikers to strength-training enthusiasts.
- Confirm that the iPhone, Apple Watch, and Apple TV use the intended Apple Account.
- Verify that the Fitness app is installed and visible.
- Restart the Apple Watch, paired iPhone, and Apple TV.
- Install the latest available operating-system update on every participating device.
- Check the Apple TV’s network connection.
- Make sure the watch is paired correctly and worn during a workout when on-screen metrics are expected.
- If the Fitness app is missing on Apple TV, update tvOS and verify that the model supports Fitness+.
- If access still fails, contact Apple Support instead of repeatedly erasing or resetting devices.
Apple’s Fitness+ support guidance specifically notes that a missing Fitness app may require a tvOS update and a compatible Apple TV. Apple also warns that Fitness+ availability and features vary by country, region, and Apple TV hardware in its setup documentation.
Should you install watchOS 10.6.1 or tvOS 17.6.1 now?
These releases were worth installing in 2024, particularly for an Apple Watch owner who could not access Fitness+ while running watchOS 10.6. They are not the right targets in 2026. Do not downgrade, sideload, or hunt for these builds; use the normal update screen to install the newest version Apple offers for your hardware.
If you are considering Fitness+ or new Apple hardware, update devices you already own first. A historical software bug is not, by itself, a reason to buy an Apple Watch or Apple TV. Fitness+ access and features remain subject to supported devices, Apple Account requirements, and regional availability.
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