watchOS 4.3

watchOS

Version

4.3

Build ID

15T5187e

File Size

317.8 MB

Release Date

2018-02-21T18:11:24Z

Update Type

Normal release

Delta update - requires 4.2 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 2018-02-21T18:11:24Z. The update package is 317.8 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 7d1d4636ad158ce6e0102a59b44ffedf1e4343e0.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-70097-20180222-B4D65086-1341-11E8-A1D7-02CE70E8E01E/com_apple_MobileAsset_SoftwareUpdate/7d1d4636ad158ce6e0102a59b44ffedf1e4343e0.zip