watchOS 4.3

watchOS

Version

4.3

Build ID

15T5199f

File Size

399.56 MB

Release Date

2018-03-06T18:08:28Z

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 (42mm, LTE) →

About This Update

watchOS 4.3 (build 15T5199f) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2018-03-06T18:08:28Z. The update package is 399.56 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 544cee1a4d918454d5a51385b46b11b29bebf1b8.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-70994-20180306-910BDD16-1E53-11E8-A0EE-5B27564229C9/com_apple_MobileAsset_SoftwareUpdate/544cee1a4d918454d5a51385b46b11b29bebf1b8.zip