watchOS 5.3.10

watchOS

Version

5.3.10

Build ID

16U711

File Size

112.17 MB

Release Date

2026-03-24T18:33:29Z

Update Type

Normal release

Delta update - requires 5.2.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 2 (42mm) →

About This Update

watchOS 5.3.10 (build 16U711) is an official Apple over-the-air update for the Apple Watch Series 2 (42mm), released on 2026-03-24T18:33:29Z. The update package is 112.17 MB. This is a delta (partial) update that requires 5.2.1 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 ee1d2baedb1e5f5e6df7874c786bcbc5b6f51624.zip.

Direct URL

https://updates.cdn-apple.com/2025FallFCS/patches/047-72828/E6BFDD88-2F43-4038-9F93-46CA7A571F7E/com_apple_MobileAsset_SoftwareUpdate/ee1d2baedb1e5f5e6df7874c786bcbc5b6f51624.zip