watchOS 5.3.10

watchOS

Version

5.3.10

Build ID

16U711

File Size

59.03 MB

Release Date

2026-03-24T18:33:11Z

Update Type

Normal release

Delta update - requires 5.3.4 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 2 (38mm) →

About This Update

watchOS 5.3.10 (build 16U711) is an official Apple over-the-air update for the Apple Watch Series 2 (38mm), released on 2026-03-24T18:33:11Z. The update package is 59.03 MB. This is a delta (partial) update that requires 5.3.4 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 cb1a71115309ad19be28e41d4524feb782284d4c.zip.

Direct URL

https://updates.cdn-apple.com/2025FallFCS/patches/047-72842/9477F229-1ACF-456D-BEDD-39D77553BD2A/com_apple_MobileAsset_SoftwareUpdate/cb1a71115309ad19be28e41d4524feb782284d4c.zip