watchOS 4.3.1

watchOS

Version

4.3.1

Build ID

15T5545b

File Size

83.45 MB

Release Date

2018-04-16T17:03:50Z

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 15T5545b) is an official Apple over-the-air update for the Apple Watch (38mm), released on 2018-04-16T17:03:50Z. The update package is 83.45 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 f426c9ed60ed4a17be581461ba3ed05403653de2.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/watchosseed/091-77130-20180416-FA325EE6-3E6F-11E8-852A-F609525157AE/com_apple_MobileAsset_SoftwareUpdate/f426c9ed60ed4a17be581461ba3ed05403653de2.zip