watchOS 4.3.1

watchOS

Version

4.3.1

Build ID

15T567

File Size

370.84 MB

Release Date

2018-05-29T17:09:37Z

Update Type

Normal release

Delta update - requires 4.2 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 2018-05-29T17:09:37Z. The update package is 370.84 MB. This is a delta (partial) update that requires 4.2 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 693afef9c5764c05a1c2f5b4290d62bc971c61e6.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/watchos/091-65794-20180529-9435336C-5AB6-11E8-8EC6-14A846B84F26/com_apple_MobileAsset_SoftwareUpdate/693afef9c5764c05a1c2f5b4290d62bc971c61e6.zip