watchOS 5.3.10

watchOS

Version

5.3.10

Build ID

16U711

File Size

1.3 GB

Release Date

2026-03-24T18:36:37Z

Update Type

Normal release

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (44mm) →

About This Update

watchOS 5.3.10 (build 16U711) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2026-03-24T18:36:37Z. The update package is 1.3 GB. This is a full OTA update that can be applied from any compatible base version. This update is currently signed by Apple, so it can be applied directly from Settings › General › Software Update.

The OTA payload file is e6e527a49b7dfd6bd40c67a2642723e8928c200d.zip.

Direct URL

https://updates.cdn-apple.com/2025FallFCS/patches/047-73011/FE4C7181-A740-479F-8C7E-5DD386665305/com_apple_MobileAsset_SoftwareUpdate/e6e527a49b7dfd6bd40c67a2642723e8928c200d.zip