watchOS 5.2.1

watchOS

Version

5.2.1

Build ID

16U5079d

File Size

460.63 MB

Release Date

2019-03-28T17:11:40Z

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 4 (40mm, LTE) →

About This Update

watchOS 5.2.1 (build 16U5079d) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm, LTE), released on 2019-03-28T17:11:40Z. The update package is 460.63 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 a9f847b3c647eeada8a40aac9a9cdd7801dfda75.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-48100/15520734-4C26-11E9-A1E0-085B777B68CB/com_apple_MobileAsset_SoftwareUpdate/a9f847b3c647eeada8a40aac9a9cdd7801dfda75.zip