watchOS 4.3.1

watchOS

Version

4.3.1

Build ID

15T6567

File Size

181.19 MB

Release Date

2018-05-29T17:09:32Z

Update Type

Normal release

Delta update - requires 4.3 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (38mm, LTE) →

About This Update

watchOS 4.3.1 (build 15T6567) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2018-05-29T17:09:32Z. The update package is 181.19 MB. This is a delta (partial) update that requires 4.3 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 a5885e32426feaaec08cc0c64ffb21fa087cdbfa.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/watchos/091-76014-20180529-B55EDCFE-5AB7-11E8-BE3C-A33542FD93D5/com_apple_MobileAsset_SoftwareUpdate/a5885e32426feaaec08cc0c64ffb21fa087cdbfa.zip