watchOS 5.3

watchOS

Version

5.3

Build ID

16U5569a

File Size

138.73 MB

Release Date

2019-07-16T17:14:50Z

Update Type

Normal release

Delta update - requires 5.2.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (40mm) →

About This Update

watchOS 5.3 (build 16U5569a) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm), released on 2019-07-16T17:14:50Z. The update package is 138.73 MB. This is a delta (partial) update that requires 5.2.1 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 c9ffc5eaff53026e80c47b1a5bb0e4c857001fc9.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SummerSeed/patches/041-84408/B0BF174E-A4B8-11E9-A6E2-367A4F8BE28D/com_apple_MobileAsset_SoftwareUpdate/c9ffc5eaff53026e80c47b1a5bb0e4c857001fc9.zip