watchOS 5.3

watchOS

Version

5.3

Build ID

16U5558b

File Size

107.95 MB

Release Date

2019-06-24T17:24:54Z

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 16U5558b) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2019-06-24T17:24:54Z. The update package is 107.95 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 6a6b9613f9b9ddf90b1840bcaa8af9ab4f01118b.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-73598/13CE91D4-939D-11E9-92DE-90012C446F1D/com_apple_MobileAsset_SoftwareUpdate/6a6b9613f9b9ddf90b1840bcaa8af9ab4f01118b.zip