watchOS 5.3

watchOS

Version

5.3

Build ID

16U5545c

File Size

454.95 MB

Release Date

2019-06-11T17:14:00Z

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) →

About This Update

watchOS 5.3 (build 16U5545c) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm), released on 2019-06-11T17:14:00Z. The update package is 454.95 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 9af71aa087451e944cf1f81db5a540fcf9f3db8d.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-72888/DA8607F4-88A7-11E9-A4A6-01BF4B7D6DB9/com_apple_MobileAsset_SoftwareUpdate/9af71aa087451e944cf1f81db5a540fcf9f3db8d.zip