watchOS 5.3

watchOS

Version

5.3

Build ID

16U5545c

File Size

157.25 MB

Release Date

2019-06-11T17:14:09Z

Update Type

Normal release

Delta update - requires 5.2 installed first.

Download OTA

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

About This Update

watchOS 5.3 (build 16U5545c) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-06-11T17:14:09Z. The update package is 157.25 MB. This is a delta (partial) update that requires 5.2 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 bfeb9f046d26650da5e02eecaebacf575920a7f5.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-72936/50749378-88A7-11E9-BA1E-C09D4B7D6DB9/com_apple_MobileAsset_SoftwareUpdate/bfeb9f046d26650da5e02eecaebacf575920a7f5.zip