watchOS 5.3

watchOS

Version

5.3

Build ID

16U569

File Size

473.76 MB

Release Date

2019-07-22T19:19:51Z

Update Type

Normal release

Delta update - requires 5.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (44mm) →

About This Update

watchOS 5.3 (build 16U569) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-07-22T19:19:51Z. The update package is 473.76 MB. This is a delta (partial) update that requires 5.1 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 36c543e64c0f63963641ed2e67303a11f10884be.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SummerFCS/patches/041-51701/91AE5FBA-A75E-11E9-93D1-E771951E92A4/com_apple_MobileAsset_SoftwareUpdate/36c543e64c0f63963641ed2e67303a11f10884be.zip