watchOS 5.3.10

watchOS

Version

5.3.10

Build ID

16U711

File Size

75.01 MB

Release Date

2026-03-24T18:36:03Z

Update Type

Normal release

Delta update - requires 5.3.7 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 2026-03-24T18:36:03Z. The update package is 75.01 MB. This is a delta (partial) update that requires 5.3.7 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 975df01858f39752f9319dcd40200ec1c3947a2b.zip.

Direct URL

https://updates.cdn-apple.com/2025FallFCS/patches/047-73069/80F79085-3371-4093-BD17-2D4DDCFE06A7/com_apple_MobileAsset_SoftwareUpdate/975df01858f39752f9319dcd40200ec1c3947a2b.zip