watchOS 4.3

watchOS

Version

4.3

Build ID

15T5199f

File Size

399.51 MB

Release Date

2018-03-06T18:08:23Z

Update Type

Normal release

Delta update - requires 4.0 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (38mm, LTE) →

About This Update

watchOS 4.3 (build 15T5199f) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2018-03-06T18:08:23Z. The update package is 399.51 MB. This is a delta (partial) update that requires 4.0 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 838cb06217b563c67964c80ee1721743e526fa6d.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-71134-20180306-958F37FC-1E53-11E8-A77D-CD27564229C9/com_apple_MobileAsset_SoftwareUpdate/838cb06217b563c67964c80ee1721743e526fa6d.zip