watchOS 5.3

watchOS

Version

5.3

Build ID

16U5558b

File Size

167.18 MB

Release Date

2019-06-24T17:25:19Z

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 16U5558b) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm), released on 2019-06-24T17:25:19Z. The update package is 167.18 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 4163ab03e73e11ea639e75c3425ac103d60940d0.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-73592/83E28C64-939D-11E9-8D7D-91942A446F1D/com_apple_MobileAsset_SoftwareUpdate/4163ab03e73e11ea639e75c3425ac103d60940d0.zip