watchOS 4.3.1

watchOS

Version

4.3.1

Build ID

15T567

File Size

663.23 MB

Release Date

2018-05-29T17:08:18Z

Update Type

Normal release

Delta update - requires 3.1.3 installed first.

Download OTA

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

About This Update

watchOS 4.3.1 (build 15T567) is an official Apple over-the-air update for the Apple Watch (38mm), released on 2018-05-29T17:08:18Z. The update package is 663.23 MB. This is a delta (partial) update that requires 3.1.3 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 ac5baa7ce4700bf539ae3f1fe7f6a3f18cb242a4.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/watchos/091-65849-20180529-8A91F4F8-5AB6-11E8-9BDC-4D2542FD93D5/com_apple_MobileAsset_SoftwareUpdate/ac5baa7ce4700bf539ae3f1fe7f6a3f18cb242a4.zip