watchOS 5.2.1

watchOS

Version

5.2.1

Build ID

16U5079d

File Size

442.04 MB

Release Date

2019-03-28T17:11:02Z

Update Type

Normal release

Delta update - requires 5.1.2 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 16U5079d) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2019-03-28T17:11:02Z. The update package is 442.04 MB. This is a delta (partial) update that requires 5.1.2 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 fad8478fb2b39c8901debf9389614b4b1fee4e58.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-48076/15D32DBE-4C26-11E9-A209-2A5B777B68CB/com_apple_MobileAsset_SoftwareUpdate/fad8478fb2b39c8901debf9389614b4b1fee4e58.zip