watchOS 5.2.1

watchOS

Version

5.2.1

Build ID

16U5079d

File Size

456.82 MB

Release Date

2019-03-28T17:10:58Z

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 1 (38mm) →

About This Update

watchOS 5.2.1 (build 16U5079d) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2019-03-28T17:10:58Z. The update package is 456.82 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 f04b5fa100e25c1f21fb0613c5feeb0a11acb3ee.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-48077/45773D9E-4C26-11E9-B7AC-8D60777B68CB/com_apple_MobileAsset_SoftwareUpdate/f04b5fa100e25c1f21fb0613c5feeb0a11acb3ee.zip