watchOS 4.3

watchOS

Version

4.3

Build ID

15T5165e

File Size

335.92 MB

Release Date

2018-01-25T18:04:51Z

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 15T5165e) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm), released on 2018-01-25T18:04:51Z. The update package is 335.92 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 f9e608036155c4d6dc6f5045da36ffefc39d7109.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-63509-20180123-30B02944-FE2E-11E7-8F66-DDF75209FAF2/com_apple_MobileAsset_SoftwareUpdate/f9e608036155c4d6dc6f5045da36ffefc39d7109.zip