watchOS 5.2.1

watchOS

Version

5.2.1

Build ID

16U5113a

File Size

463.8 MB

Release Date

2019-05-07T17:18:48Z

Update Type

Normal release

Delta update - requires 5.1.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 1 (42mm) →

About This Update

watchOS 5.2.1 (build 16U5113a) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2019-05-07T17:18:48Z. The update package is 463.8 MB. This is a delta (partial) update that requires 5.1.1 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 0333d664cb312567538a89f549692da7ff6d754c.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-59990/9A2D4152-6EAA-11E9-A0B4-A976B6DDD32B/com_apple_MobileAsset_SoftwareUpdate/0333d664cb312567538a89f549692da7ff6d754c.zip