watchOS 4.3

watchOS

Version

4.3

Build ID

15T5176c

File Size

315.46 MB

Release Date

2018-02-07T18:09:45Z

Update Type

Normal release

Delta update - requires 4.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 1 (38mm) →

About This Update

watchOS 4.3 (build 15T5176c) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2018-02-07T18:09:45Z. The update package is 315.46 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 16864b697fc4761667d8e01cea7a7c63c7012c9d.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-64159-20180205-BD202F28-07A2-11E8-A5DE-3943315CC82B/com_apple_MobileAsset_SoftwareUpdate/16864b697fc4761667d8e01cea7a7c63c7012c9d.zip