watchOS 4.3.1

watchOS

Version

4.3.1

Build ID

15T567

File Size

352.67 MB

Release Date

2018-05-29T17:09:42Z

Update Type

Normal release

Delta update - requires 4.1 installed first.

Download OTA

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

About This Update

watchOS 4.3.1 (build 15T567) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2018-05-29T17:09:42Z. The update package is 352.67 MB. This is a delta (partial) update that requires 4.1 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 76adab96ccca700d5b50fc383f79051c02bead8a.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/watchos/091-65935-20180529-38D00796-5ABA-11E8-A189-124242FD93D5/com_apple_MobileAsset_SoftwareUpdate/76adab96ccca700d5b50fc383f79051c02bead8a.zip