watchOS 4.3

watchOS

Version

4.3

Build ID

15T5212a

File Size

374.81 MB

Release Date

2018-03-16T20:09:32Z

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 15T5212a) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2018-03-16T20:09:32Z. The update package is 374.81 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 17015e481b4ec3d60a5bf798c7659cc8a5479d08.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-73491-20180316-A2A8CBA2-27C1-11E8-8CCB-B461C3BE6990/com_apple_MobileAsset_SoftwareUpdate/17015e481b4ec3d60a5bf798c7659cc8a5479d08.zip