watchOS 5.3

watchOS

Version

5.3

Build ID

16U5569a

File Size

97.38 MB

Release Date

2019-07-16T17:14:51Z

Update Type

Normal release

Delta update - requires 5.3 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 2019-07-16T17:14:51Z. The update package is 97.38 MB. This is a delta (partial) update that requires 5.3 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 63a5df611b0182367a14255c653c2afb4a24df2f.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SummerSeed/patches/041-84387/180BC4D8-A4B9-11E9-9AE4-4F924F8BE28D/com_apple_MobileAsset_SoftwareUpdate/63a5df611b0182367a14255c653c2afb4a24df2f.zip