watchOS 5.3

watchOS

Version

5.3

Build ID

16U5569a

File Size

142.1 MB

Release Date

2019-07-16T17:14:33Z

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 3 (42mm, LTE) →

About This Update

watchOS 5.3 (build 16U5569a) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2019-07-16T17:14:33Z. The update package is 142.1 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 a1be7ea2eb0cb3a9ef0173db01f07c81e7dbc6ac.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SummerSeed/patches/041-84297/9559A640-A4B8-11E9-8BAB-B3734F8BE28D/com_apple_MobileAsset_SoftwareUpdate/a1be7ea2eb0cb3a9ef0173db01f07c81e7dbc6ac.zip