watchOS 5.2.1

watchOS

Version

5.2.1

Build ID

16U5113a

File Size

472.31 MB

Release Date

2019-05-07T17:19:44Z

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 4 (40mm, LTE) →

About This Update

watchOS 5.2.1 (build 16U5113a) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm, LTE), released on 2019-05-07T17:19:44Z. The update package is 472.31 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 bfeddd7989250fa4cc8cd72a6f0bacf3170902f0.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-60103/5BCA008A-6EAA-11E9-B95C-0071B6DDD32B/com_apple_MobileAsset_SoftwareUpdate/bfeddd7989250fa4cc8cd72a6f0bacf3170902f0.zip