watchOS 5.2.1

watchOS

Version

5.2.1

Build ID

16U5079d

File Size

459.5 MB

Release Date

2019-03-28T17:11:31Z

Update Type

Normal release

Delta update - requires 5.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (40mm) →

About This Update

watchOS 5.2.1 (build 16U5079d) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm), released on 2019-03-28T17:11:31Z. The update package is 459.5 MB. This is a delta (partial) update that requires 5.1 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 6cea65a46362b553d2d34a82be2ec2ee267454bc.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-46456/514782BE-4C26-11E9-B9AE-3F63777B68CB/com_apple_MobileAsset_SoftwareUpdate/6cea65a46362b553d2d34a82be2ec2ee267454bc.zip