watchOS 4.3.1

watchOS

Version

4.3.1

Build ID

15T567

File Size

315.44 MB

Release Date

2018-05-29T17:08:32Z

Update Type

Normal release

Delta update - requires 4.2.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch (42mm) →

About This Update

watchOS 4.3.1 (build 15T567) is an official Apple over-the-air update for the Apple Watch (42mm), released on 2018-05-29T17:08:32Z. The update package is 315.44 MB. This is a delta (partial) update that requires 4.2.2 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 909faad165de52a0011fabdb05632ba959d633f7.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/watchos/091-65780-20180529-92E044A2-5AB6-11E8-B2A1-BEA746B84F26/com_apple_MobileAsset_SoftwareUpdate/909faad165de52a0011fabdb05632ba959d633f7.zip