watchOS 5.2.1

watchOS

Version

5.2.1

Build ID

16U5110a

File Size

146.29 MB

Release Date

2019-04-29T17:39:25Z

Update Type

Normal release

Delta update - requires 5.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (42mm) →

About This Update

watchOS 5.2.1 (build 16U5110a) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm), released on 2019-04-29T17:39:25Z. The update package is 146.29 MB. This is a delta (partial) update that requires 5.2 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 0cba4ad6e3ece649b9cc6d7f01ba2704b5136e71.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-58853/2F47810E-686A-11E9-8DF3-D38B78A6FCC2/com_apple_MobileAsset_SoftwareUpdate/0cba4ad6e3ece649b9cc6d7f01ba2704b5136e71.zip