watchOS 4.3

watchOS

Version

4.3

Build ID

15T5187e

File Size

330.84 MB

Release Date

2018-02-21T18:11:24Z

Update Type

Normal release

Delta update - requires 4.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch (42mm) →

About This Update

watchOS 4.3 (build 15T5187e) is an official Apple over-the-air update for the Apple Watch (42mm), released on 2018-02-21T18:11:24Z. The update package is 330.84 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 0fc5e8d698d51e928dee50e048ab1dc5d4e2f54f.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-70231-20180222-C0A52EFA-1341-11E8-9271-DAD070E8E01E/com_apple_MobileAsset_SoftwareUpdate/0fc5e8d698d51e928dee50e048ab1dc5d4e2f54f.zip