watchOS 4.3

watchOS

Version

4.3

Build ID

15T5176c

File Size

336.63 MB

Release Date

2018-02-07T18:10:18Z

Update Type

Normal release

Delta update - requires 4.1 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 2018-02-07T18:10:18Z. The update package is 336.63 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 f5486cc4434828d85a8db8aa7a47545bd3cd1754.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-64133-20180205-165468A2-07A3-11E8-8D01-D04F315CC82B/com_apple_MobileAsset_SoftwareUpdate/f5486cc4434828d85a8db8aa7a47545bd3cd1754.zip