watchOS 4.3.1

watchOS

Version

4.3.1

Build ID

15T5535b

File Size

82.32 MB

Release Date

2018-04-02T17:13:02Z

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 15T5535b) is an official Apple over-the-air update for the Apple Watch (38mm), released on 2018-04-02T17:13:02Z. The update package is 82.32 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 00cf548151a0375627563422a8324940c1450f6a.zip.

Direct URL

http://updates-http.cdn-apple.com/2018/watchosseed/091-75352-20180402-DB8B67AC-32EF-11E8-A85B-D39450D38548/com_apple_MobileAsset_SoftwareUpdate/00cf548151a0375627563422a8324940c1450f6a.zip