watchOS 5.2.1

watchOS

Version

5.2.1

Build ID

16U5110a

File Size

65.78 MB

Release Date

2019-04-29T17:39:46Z

Update Type

Normal release

Delta update - requires 5.2.1 installed first.

Download OTA

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

About This Update

watchOS 5.2.1 (build 16U5110a) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-04-29T17:39:46Z. The update package is 65.78 MB. This is a delta (partial) update that requires 5.2.1 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 d7022cf622869a2f26d58c1dd76c1389c6cb2de6.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-59028/2F763062-686A-11E9-A037-F18B78A6FCC2/com_apple_MobileAsset_SoftwareUpdate/d7022cf622869a2f26d58c1dd76c1389c6cb2de6.zip