watchOS 5.3

watchOS

Version

5.3

Build ID

16U5537b

File Size

94.48 MB

Release Date

2019-05-28T17:12:19Z

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 1 (38mm) →

About This Update

watchOS 5.3 (build 16U5537b) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2019-05-28T17:12:19Z. The update package is 94.48 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 1297f41bd5e810ca66a3726a204db796d175b17e.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-67365/F449E700-7D76-11E9-86DE-E7B1E8E824FB/com_apple_MobileAsset_SoftwareUpdate/1297f41bd5e810ca66a3726a204db796d175b17e.zip