watchOS 5.3

watchOS

Version

5.3

Build ID

16U5537b

File Size

133.08 MB

Release Date

2019-05-28T17:12:22Z

Update Type

Normal release

Delta update - requires 5.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 1 (42mm) →

About This Update

watchOS 5.3 (build 16U5537b) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2019-05-28T17:12:22Z. The update package is 133.08 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 5f36b62bb83ae4c2562aca596d63509f2c1b9888.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-67406/866B5574-7D77-11E9-B42D-C7F34180E4E1/com_apple_MobileAsset_SoftwareUpdate/5f36b62bb83ae4c2562aca596d63509f2c1b9888.zip