watchOS 4.3

watchOS

Version

4.3

Build ID

15T5187e

File Size

331.25 MB

Release Date

2018-02-21T18:11:23Z

Update Type

Normal release

Delta update - requires 4.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch (42mm) →

About This Update

watchOS 4.3 (build 15T5187e) is an official Apple over-the-air update for the Apple Watch (42mm), released on 2018-02-21T18:11:23Z. The update package is 331.25 MB. This is a delta (partial) update that requires 4.1 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 aef6cd54d45087af00184c56a3fa4349a7c07e9d.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-70144-20180222-DFC5D6A4-1341-11E8-92A3-83D470E8E01E/com_apple_MobileAsset_SoftwareUpdate/aef6cd54d45087af00184c56a3fa4349a7c07e9d.zip