watchOS 4.3

watchOS

Version

4.3

Build ID

15T5165e

File Size

328.25 MB

Release Date

2018-01-25T18:04:18Z

Update Type

Normal release

Delta update - requires 4.1 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 328.25 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 4b845c513a3334e79db10b06e19176711890e210.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-63502-20180123-2D7386F4-FE2E-11E7-9C24-04F75209FAF2/com_apple_MobileAsset_SoftwareUpdate/4b845c513a3334e79db10b06e19176711890e210.zip