watchOS 5.3.10

watchOS

Version

5.3.10

Build ID

16U711

File Size

76.76 MB

Release Date

2026-03-24T18:35:59Z

Update Type

Normal release

Delta update - requires 5.3.4 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (42mm) →

About This Update

watchOS 5.3.10 (build 16U711) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm), released on 2026-03-24T18:35:59Z. The update package is 76.76 MB. This is a delta (partial) update that requires 5.3.4 to already be installed on the device - it cannot be applied from scratch. This update is currently signed by Apple, so it can be applied directly from Settings › General › Software Update.

The OTA payload file is dddf4c80b93fc0f7778898a81446ad526696de5d.zip.

Direct URL

https://updates.cdn-apple.com/2025FallFCS/patches/047-72966/9C476C9C-5853-4C95-B71C-1E2695B698E5/com_apple_MobileAsset_SoftwareUpdate/dddf4c80b93fc0f7778898a81446ad526696de5d.zip