watchOS 4.3.1

watchOS

Version

4.3.1

Build ID

15T567

File Size

408.33 MB

Release Date

2018-05-29T17:09:36Z

Update Type

Normal release

Delta update - requires 4.0 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (42mm, LTE) →

About This Update

watchOS 4.3.1 (build 15T567) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2018-05-29T17:09:36Z. The update package is 408.33 MB. This is a delta (partial) update that requires 4.0 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 de70120437e5ebc5f318277534fb3d55a2c566d7.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/watchos/091-65694-20180529-7866A3A6-5AB5-11E8-A985-589946B84F26/com_apple_MobileAsset_SoftwareUpdate/de70120437e5ebc5f318277534fb3d55a2c566d7.zip