watchOS 4.2.3

watchOS

Version

4.2.3

Build ID

15S600b

File Size

780.05 MB

Release Date

2018-02-19T21:17:07Z

Update Type

Normal release

Delta update - requires 2.0 installed first.

Download OTA

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

About This Update

watchOS 4.2.3 (build 15S600b) is an official Apple over-the-air update for the Apple Watch (38mm), released on 2018-02-19T21:17:07Z. The update package is 780.05 MB. This is a delta (partial) update that requires 2.0 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 9abbfa754a4ff2f2329a0ab639230b56ea7c714b.zip.

Direct URL

http://appldnld.apple.com/watchos4.2.3/091-69503-20180219-AEE604DE-1312-11E8-B5A2-4698E0A71A1F/com_apple_MobileAsset_SoftwareUpdate/9abbfa754a4ff2f2329a0ab639230b56ea7c714b.zip