watchOS 5.2.1

watchOS

Version

5.2.1

Build ID

16U5113a

File Size

448.9 MB

Release Date

2019-05-07T17:18:39Z

Update Type

Normal release

Delta update - requires 5.1.2 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 16U5113a) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2019-05-07T17:18:39Z. The update package is 448.9 MB. This is a delta (partial) update that requires 5.1.2 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 e25f2d906f90900e5b5a5a1b37bfbd913f015cca.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-59958/5C8AF902-6EAA-11E9-B9E2-2971B6DDD32B/com_apple_MobileAsset_SoftwareUpdate/e25f2d906f90900e5b5a5a1b37bfbd913f015cca.zip