watchOS 5.3.1

watchOS

Version

5.3.1

Build ID

16U600

File Size

452.6 MB

Release Date

2019-08-26T17:14:16Z

Update Type

Normal release

Delta update - requires 5.1.3 installed first.

Download OTA

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

About This Update

watchOS 5.3.1 (build 16U600) is an official Apple over-the-air update for the Apple Watch Series 2 (42mm), released on 2019-08-26T17:14:16Z. The update package is 452.6 MB. This is a delta (partial) update that requires 5.1.3 to already be installed on the device - it cannot be applied from scratch. This update is no longer signed by Apple, meaning it can no longer be downloaded and applied on-device through Settings.

The OTA payload file is 20cf80d2fdec557a49d06b5156c2e8b6f0701479.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SummerFCS/patches/041-91862/F0C8D240-C500-11E9-8AF5-FA4284357117/com_apple_MobileAsset_SoftwareUpdate/20cf80d2fdec557a49d06b5156c2e8b6f0701479.zip