watchOS 5.3.1

watchOS

Version

5.3.1

Build ID

16U600

File Size

998.7 MB

Release Date

2019-08-26T17:13:50Z

Update Type

Normal release

Delta update - requires 3.0 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 2 (38mm) →

About This Update

watchOS 5.3.1 (build 16U600) is an official Apple over-the-air update for the Apple Watch Series 2 (38mm), released on 2019-08-26T17:13:50Z. The update package is 998.7 MB. This is a delta (partial) update that requires 3.0 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 d5826dcd899547fc52ef813ee10da3a478d0ff48.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SummerFCS/patches/041-92130/A76CC5CE-C501-11E9-91C9-2BD951566A18/com_apple_MobileAsset_SoftwareUpdate/d5826dcd899547fc52ef813ee10da3a478d0ff48.zip