watchOS 5.3

watchOS

Version

5.3

Build ID

16U5569a

File Size

106.17 MB

Release Date

2019-07-16T17:14:55Z

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 (44mm) →

About This Update

watchOS 5.3 (build 16U5569a) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-07-16T17:14:55Z. The update package is 106.17 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 d4ef9d30c811464e996aa2b5869811568667b2e2.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SummerSeed/patches/041-84366/1F90F4A8-A4B9-11E9-B488-71944F8BE28D/com_apple_MobileAsset_SoftwareUpdate/d4ef9d30c811464e996aa2b5869811568667b2e2.zip