watchOS 4.3

watchOS

Version

4.3

Build ID

15T5176c

File Size

323.04 MB

Release Date

2018-02-07T18:10:19Z

Update Type

Normal release

Delta update - requires 4.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (38mm) →

About This Update

watchOS 4.3 (build 15T5176c) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2018-02-07T18:10:19Z. The update package is 323.04 MB. This is a delta (partial) update that requires 4.2 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 d50ae88c999c375aa2ffbfd422b61d80f15b9c27.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-64204-20180205-FDC3AF96-07A2-11E8-8006-C74B315CC82B/com_apple_MobileAsset_SoftwareUpdate/d50ae88c999c375aa2ffbfd422b61d80f15b9c27.zip