watchOS 4.3

watchOS

Version

4.3

Build ID

15T5199f

File Size

319.55 MB

Release Date

2018-03-06T18:07:44Z

Update Type

Normal release

Delta update - requires 4.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch (38mm) →

About This Update

watchOS 4.3 (build 15T5199f) is an official Apple over-the-air update for the Apple Watch (38mm), released on 2018-03-06T18:07:44Z. The update package is 319.55 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 4a4d27b22de56a73435f0e0e4a07786c2925a15f.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-71147-20180306-83019B0C-1E53-11E8-82A3-7725564229C9/com_apple_MobileAsset_SoftwareUpdate/4a4d27b22de56a73435f0e0e4a07786c2925a15f.zip