watchOS 4.2

watchOS

Version

4.2

Build ID

15S102

File Size

776.73 MB

Release Date

2017-12-05T18:00:34Z

Update Type

Normal release

Delta update - requires 2.2.1 installed first.

Download OTA

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

About This Update

watchOS 4.2 (build 15S102) is an official Apple over-the-air update for the Apple Watch (38mm), released on 2017-12-05T18:00:34Z. The update package is 776.73 MB. This is a delta (partial) update that requires 2.2.1 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 aa2a136caa6f1513c4c3698b955494ef755e255b.zip.

Direct URL

http://appldnld.apple.com/watchos4.2/091-19304-20171204-36913066-D47F-11E7-ACFF-0B1A2EDC3D3E/com_apple_MobileAsset_SoftwareUpdate/aa2a136caa6f1513c4c3698b955494ef755e255b.zip