watchOS 4.3

watchOS

Version

4.3

Build ID

15T5165e

File Size

353.18 MB

Release Date

2018-01-25T18:04:18Z

Update Type

Normal release

Delta update - requires 4.0 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 1 (38mm) →

About This Update

watchOS 4.3 (build 15T5165e) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2018-01-25T18:04:18Z. The update package is 353.18 MB. This is a delta (partial) update that requires 4.0 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 f7b199fa87119f26f239288621a8f79a4200e027.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-63444-20180123-C3251C36-FE2D-11E7-878D-84EB5209FAF2/com_apple_MobileAsset_SoftwareUpdate/f7b199fa87119f26f239288621a8f79a4200e027.zip