watchOS 4.2

watchOS

Version

4.2

Build ID

15S102

File Size

187.98 MB

Release Date

2017-12-05T18:01:54Z

Update Type

Normal release

Delta update - requires 4.0 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 1 (42mm) →

About This Update

watchOS 4.2 (build 15S102) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2017-12-05T18:01:54Z. The update package is 187.98 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 a1bd94cbcd80abf63f44a5b8a94de151a8824e83.zip.

Direct URL

http://appldnld.apple.com/watchos4.2/091-30581-20171204-C23295DC-D480-11E7-A7B2-6B312EDC3D3E/com_apple_MobileAsset_SoftwareUpdate/a1bd94cbcd80abf63f44a5b8a94de151a8824e83.zip