watchOS 5.2.1

watchOS

Version

5.2.1

Build ID

16U5113a

File Size

184.9 MB

Release Date

2019-05-07T17:19:53Z

Update Type

Normal release

Delta update - requires 5.2 installed first.

Download OTA

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

About This Update

watchOS 5.2.1 (build 16U5113a) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm, LTE), released on 2019-05-07T17:19:53Z. The update package is 184.9 MB. This is a delta (partial) update that requires 5.2 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 f77a1f9783901c330b6d45c811ac3b4e097b239f.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-60126/E51F70A8-6EA6-11E9-811E-2336B6DDD32B/com_apple_MobileAsset_SoftwareUpdate/f77a1f9783901c330b6d45c811ac3b4e097b239f.zip