watchOS 4.3.1

watchOS

Version

4.3.1

Build ID

15T5535b

File Size

308.3 MB

Release Date

2018-04-02T17:12:59Z

Update Type

Normal release

Delta update - requires 4.2.2 installed first.

Download OTA

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About This Update

watchOS 4.3.1 (build 15T5535b) is an official Apple over-the-air update for the Apple Watch (38mm), released on 2018-04-02T17:12:59Z. The update package is 308.3 MB. This is a delta (partial) update that requires 4.2.2 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 7a38b326078023bad046c93d18c85cfa1fe954b6.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/watchosseed/091-74407-20180402-912AB0BE-32EF-11E8-B8BF-C08750D38548/com_apple_MobileAsset_SoftwareUpdate/7a38b326078023bad046c93d18c85cfa1fe954b6.zip