watchOS 4.3

watchOS

Version

4.3

Build ID

15T5176c

File Size

316.32 MB

Release Date

2018-02-07T18:09:39Z

Update Type

Normal release

Delta update - requires 4.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 2 (42mm) →

About This Update

watchOS 4.3 (build 15T5176c) is an official Apple over-the-air update for the Apple Watch Series 2 (42mm), released on 2018-02-07T18:09:39Z. The update package is 316.32 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 ca55fbe873b0d7f7a4d2613078eefb448d2afb84.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-64186-20180205-F2949F22-07A2-11E8-AF29-9C4A315CC82B/com_apple_MobileAsset_SoftwareUpdate/ca55fbe873b0d7f7a4d2613078eefb448d2afb84.zip