watchOS 5.2.1

watchOS

Version

5.2.1

Build ID

16U5113a

File Size

492.73 MB

Release Date

2019-05-07T17:19:50Z

Update Type

Normal release

Delta update - requires 5.1.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (44mm, LTE) →

About This Update

watchOS 5.2.1 (build 16U5113a) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm, LTE), released on 2019-05-07T17:19:50Z. The update package is 492.73 MB. This is a delta (partial) update that requires 5.1.1 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 04b917197d4a552eda46959d3f6c637105e2b501.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-60048/96BF50C8-6EAA-11E9-B6CF-0276B6DDD32B/com_apple_MobileAsset_SoftwareUpdate/04b917197d4a552eda46959d3f6c637105e2b501.zip