watchOS 5.3.10

watchOS

Version

5.3.10

Build ID

16U711

File Size

56.13 MB

Release Date

2026-03-24T18:34:06Z

Update Type

Normal release

Delta update - requires 5.3.8 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 1 (38mm) →

About This Update

watchOS 5.3.10 (build 16U711) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2026-03-24T18:34:06Z. The update package is 56.13 MB. This is a delta (partial) update that requires 5.3.8 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 01686add8ba39418a5ce2b2eacd70ac4673711b3.zip.

Direct URL

https://updates.cdn-apple.com/2025FallFCS/patches/047-73074/3BE560BA-4E01-4333-9F02-6C1653808C1F/com_apple_MobileAsset_SoftwareUpdate/01686add8ba39418a5ce2b2eacd70ac4673711b3.zip