watchOS 4.3

watchOS

Version

4.3

Build ID

15T5165e

File Size

303.72 MB

Release Date

2018-01-25T18:04:21Z

Update Type

Normal release

Delta update - requires 4.2.2 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 2018-01-25T18:04:21Z. The update package is 303.72 MB. This is a delta (partial) update that requires 4.2.2 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 20ada60fd72d3d65afe86d36bb3a02990dfc57ad.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-63622-20180123-EFC68EF4-FE2E-11E7-97AF-A70C5309FAF2/com_apple_MobileAsset_SoftwareUpdate/20ada60fd72d3d65afe86d36bb3a02990dfc57ad.zip