watchOS 4.2

watchOS

Version

4.2

Build ID

15S102

File Size

213.38 MB

Release Date

2017-12-05T18:02:08Z

Update Type

Normal release

Delta update - requires 4.0.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (42mm, LTE) →

About This Update

watchOS 4.2 (build 15S102) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2017-12-05T18:02:08Z. The update package is 213.38 MB. This is a delta (partial) update that requires 4.0.1 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 a385bc6f04880a47d30ed9e88caa8e0c6c167f20.zip.

Direct URL

http://appldnld.apple.com/watchos4.2/091-19300-20171204-F7A42578-D480-11E7-A0ED-B03B2EDC3D3E/com_apple_MobileAsset_SoftwareUpdate/a385bc6f04880a47d30ed9e88caa8e0c6c167f20.zip