watchOS 4.3.1

watchOS

Version

4.3.1

Build ID

15T5567a

File Size

307.81 MB

Release Date

2018-05-14T17:13:38Z

Update Type

Normal release

Delta update - requires 4.2.3 installed first.

Download OTA

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About This Update

watchOS 4.3.1 (build 15T5567a) is an official Apple over-the-air update for the Apple Watch (38mm), released on 2018-05-14T17:13:38Z. The update package is 307.81 MB. This is a delta (partial) update that requires 4.2.3 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 ce0db7b640b792305e50db81b9af0802d54f4447.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/watchosseed/091-84295-20180514-2DCFB0A2-5502-11E8-9B89-6C0D39D97EC1/com_apple_MobileAsset_SoftwareUpdate/ce0db7b640b792305e50db81b9af0802d54f4447.zip