watchOS 5.3.10

watchOS

Version

5.3.10

Build ID

16U711

File Size

106.46 MB

Release Date

2026-03-24T18:35:08Z

Update Type

Normal release

Delta update - requires 5.3.3 installed first.

Download OTA

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

About This Update

watchOS 5.3.10 (build 16U711) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2026-03-24T18:35:08Z. The update package is 106.46 MB. This is a delta (partial) update that requires 5.3.3 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 ed348fe13cf89f6ab6ea22a78ed3c341f76277d0.zip.

Direct URL

https://updates.cdn-apple.com/2025FallFCS/patches/047-72905/9813043D-2DFA-4642-9495-4946778AA072/com_apple_MobileAsset_SoftwareUpdate/ed348fe13cf89f6ab6ea22a78ed3c341f76277d0.zip