watchOS 5.3

watchOS

Version

5.3

Build ID

16U5537b

File Size

91.38 MB

Release Date

2019-05-28T17:13:19Z

Update Type

Normal release

Delta update - requires 5.2.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (44mm, LTE) →

About This Update

watchOS 5.3 (build 16U5537b) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm, LTE), released on 2019-05-28T17:13:19Z. The update package is 91.38 MB. This is a delta (partial) update that requires 5.2.1 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 6c2b5f928dff6a6a3f90749bb8c656e244b03000.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-67503/F1EA4586-7D76-11E9-8475-837F829DFA01/com_apple_MobileAsset_SoftwareUpdate/6c2b5f928dff6a6a3f90749bb8c656e244b03000.zip