watchOS 5.2.1

watchOS

Version

5.2.1

Build ID

16U5101c

File Size

127.75 MB

Release Date

2019-04-22T17:13:29Z

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) →

About This Update

watchOS 5.2.1 (build 16U5101c) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-04-22T17:13:29Z. The update package is 127.75 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 ff2709bb5ac241b259e189ffe4aa77d944917ae8.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-56137/3E13275C-6242-11E9-ABBC-AAD756350BEA/com_apple_MobileAsset_SoftwareUpdate/ff2709bb5ac241b259e189ffe4aa77d944917ae8.zip