watchOS 4.3

watchOS

Version

4.3

Build ID

15T5199f

File Size

360.06 MB

Release Date

2018-03-07T02:04:20Z

Update Type

Normal release

Delta update - requires 4.2.3 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 2018-03-07T02:04:20Z. The update package is 360.06 MB. This is a delta (partial) update that requires 4.2.3 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 4e057bfea744bc9f5c3b9d9ab36ddbb18c2b2a65.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-71191-20180306-ECDEEDE2-2180-11E8-9420-3B70E62A1CD9/com_apple_MobileAsset_SoftwareUpdate/4e057bfea744bc9f5c3b9d9ab36ddbb18c2b2a65.zip