watchOS 4.3.1

watchOS

Version

4.3.1

Build ID

15T567

File Size

821.3 MB

Release Date

2018-05-29T17:08:28Z

Update Type

Normal release

Delta update - requires 2.2.1 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 2018-05-29T17:08:28Z. The update package is 821.3 MB. This is a delta (partial) update that requires 2.2.1 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 ce72c30d7cc48ac0d5beb51884dd8770590b3df0.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/watchos/091-65664-20180529-782CB394-5AB5-11E8-AFC2-3A9946B84F26/com_apple_MobileAsset_SoftwareUpdate/ce72c30d7cc48ac0d5beb51884dd8770590b3df0.zip