watchOS 4.3

watchOS

Version

4.3

Build ID

15T5187e

File Size

395.84 MB

Release Date

2018-02-21T18:12:02Z

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 15T5187e) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2018-02-21T18:12:02Z. The update package is 395.84 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 16c7b6777468db0a4ff2d3b9a9a2d55b39e28cdb.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-70249-20180222-F0A40162-1341-11E8-968B-7BD770E8E01E/com_apple_MobileAsset_SoftwareUpdate/16c7b6777468db0a4ff2d3b9a9a2d55b39e28cdb.zip