watchOS 5.2.1

watchOS

Version

5.2.1

Build ID

16U5113a

File Size

98 MB

Release Date

2019-05-07T17:19:34Z

Update Type

Normal release

Delta update - requires 5.2.1 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 16U5113a) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm), released on 2019-05-07T17:19:34Z. The update package is 98 MB. This is a delta (partial) update that requires 5.2.1 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 f7a52a55bfce23395ba8cf92a4ac8003892bc5b1.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-59985/AB3AEE30-6EA6-11E9-B526-B726B6DDD32B/com_apple_MobileAsset_SoftwareUpdate/f7a52a55bfce23395ba8cf92a4ac8003892bc5b1.zip