watchOS 4.3

watchOS

Version

4.3

Build ID

15T5187e

File Size

317.76 MB

Release Date

2018-02-21T18:11:25Z

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 2018-02-21T18:11:25Z. The update package is 317.76 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 c61b0ffab4df795bf6aa6b73b3766cc95957d6ef.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-70135-20180222-8550F7BC-1341-11E8-8B10-26C870E8E01E/com_apple_MobileAsset_SoftwareUpdate/c61b0ffab4df795bf6aa6b73b3766cc95957d6ef.zip