watchOS 5.3

watchOS

Version

5.3

Build ID

16U5537b

File Size

166.88 MB

Release Date

2019-05-28T17:12:48Z

Update Type

Normal release

Delta update - requires 5.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (42mm) →

About This Update

watchOS 5.3 (build 16U5537b) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm), released on 2019-05-28T17:12:48Z. The update package is 166.88 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 5fca0f580704c5f72ca1e8641365e9f6f3d3d7c4.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-67366/92E3B9A4-7D77-11E9-A29F-F2CF39EB6E3C/com_apple_MobileAsset_SoftwareUpdate/5fca0f580704c5f72ca1e8641365e9f6f3d3d7c4.zip