watchOS 5.2.1

watchOS

Version

5.2.1

Build ID

16U113

File Size

821.89 MB

Release Date

2019-05-13T17:16:36Z

Update Type

Normal release

Delta update - requires 4.3.1 installed first.

Download OTA

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

About This Update

watchOS 5.2.1 (build 16U113) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2019-05-13T17:16:36Z. The update package is 821.89 MB. This is a delta (partial) update that requires 4.3.1 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 5f90602ab60c98f7bae5bb5dddc2742b983c8d99.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringFCS/patches/041-51417/537178CC-704A-11E9-96D5-5B3C83443981/com_apple_MobileAsset_SoftwareUpdate/5f90602ab60c98f7bae5bb5dddc2742b983c8d99.zip