watchOS 4.3

watchOS

Version

4.3

Build ID

15T5165e

File Size

391.05 MB

Release Date

2018-01-25T18:04:36Z

Update Type

Normal release

Delta update - requires 4.0 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (38mm, LTE) →

About This Update

watchOS 4.3 (build 15T5165e) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2018-01-25T18:04:36Z. The update package is 391.05 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 c21f66c5de9a2c38b1c57638484c4b197e2e0ab1.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-63480-20180123-089A4494-FE2E-11E7-B650-C4F25209FAF2/com_apple_MobileAsset_SoftwareUpdate/c21f66c5de9a2c38b1c57638484c4b197e2e0ab1.zip