watchOS 4.3.1

watchOS

Version

4.3.1

Build ID

15T567

File Size

328.23 MB

Release Date

2018-05-29T17:08:19Z

Update Type

Normal release

Delta update - requires 4.1 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 2018-05-29T17:08:19Z. The update package is 328.23 MB. This is a delta (partial) update that requires 4.1 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 db78a1f8123c7521424466f1eb755bbf0bbd7c1f.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/watchos/091-65963-20180529-7BEFF8F4-5AB7-11E8-BF85-602E42FD93D5/com_apple_MobileAsset_SoftwareUpdate/db78a1f8123c7521424466f1eb755bbf0bbd7c1f.zip