watchOS 4.3.1

watchOS

Version

4.3.1

Build ID

15T5565a

File Size

140.24 MB

Release Date

2018-05-07T17:22:50Z

Update Type

Normal release

Delta update - requires 4.3 installed first.

Download OTA

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About This Update

watchOS 4.3.1 (build 15T5565a) is an official Apple over-the-air update for the Apple Watch (38mm), released on 2018-05-07T17:22:50Z. The update package is 140.24 MB. This is a delta (partial) update that requires 4.3 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 200b94378dd5f34a879f773206330a0e8775b49d.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/watchosseed/091-82150-20180507-479A5E68-4EF6-11E8-BF57-8333CEB366E9/com_apple_MobileAsset_SoftwareUpdate/200b94378dd5f34a879f773206330a0e8775b49d.zip