watchOS 5.3

watchOS

Version

5.3

Build ID

16U5566a

File Size

115.63 MB

Release Date

2019-07-09T17:19:55Z

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 3 (38mm) →

About This Update

watchOS 5.3 (build 16U5566a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2019-07-09T17:19:55Z. The update package is 115.63 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 96857e1d3faea391e0e012335f6c10c1955a1b2e.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SummerSeed/patches/041-78829/F715CD8E-9DC7-11E9-B483-C9B29E15B375/com_apple_MobileAsset_SoftwareUpdate/96857e1d3faea391e0e012335f6c10c1955a1b2e.zip