watchOS 4.2

watchOS

Version

4.2

Build ID

15S5102b

File Size

543.91 MB

Release Date

2017-11-17T18:16:49Z

Update Type

Normal release

Delta update - requires 3.2.3 installed first.

Download OTA

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

About This Update

watchOS 4.2 (build 15S5102b) is an official Apple over-the-air update for the Apple Watch (38mm), released on 2017-11-17T18:16:49Z. The update package is 543.91 MB. This is a delta (partial) update that requires 3.2.3 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 26c7ffbf13d2e267cef9038b834b9298e2aefe6e.zip.

Direct URL

http://appldnld.apple.com/watchos4.2seed/091-47422-20171117-8C7CB076-CA3A-11E7-81FB-BC8C674CD23E/com_apple_MobileAsset_SoftwareUpdate/26c7ffbf13d2e267cef9038b834b9298e2aefe6e.zip