watchOS 5.2.1

watchOS

Version

5.2.1

Build ID

16U113

File Size

824.94 MB

Release Date

2019-05-13T17:16:10Z

Update Type

Normal release

Delta update - requires 4.3 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 1 (38mm) →

About This Update

watchOS 5.2.1 (build 16U113) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2019-05-13T17:16:10Z. The update package is 824.94 MB. This is a delta (partial) update that requires 4.3 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 8affb611adf5e64c0c8567a7fc806125a4e9b631.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringFCS/patches/041-07054/52D8E438-7048-11E9-8429-070383443981/com_apple_MobileAsset_SoftwareUpdate/8affb611adf5e64c0c8567a7fc806125a4e9b631.zip