watchOS 4.3

watchOS

Version

4.3

Build ID

15T5199f

File Size

375.21 MB

Release Date

2018-03-06T18:08:23Z

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, 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 375.21 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 b7af1ea8b6913c506f3669fc532e2c476c824f63.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-71132-20180306-A8B815B0-1E53-11E8-9BAF-7B29564229C9/com_apple_MobileAsset_SoftwareUpdate/b7af1ea8b6913c506f3669fc532e2c476c824f63.zip