watchOS 5.3

watchOS

Version

5.3

Build ID

16U5526f

File Size

147.5 MB

Release Date

2019-05-15T17:12:20Z

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 3 (42mm) →

About This Update

watchOS 5.3 (build 16U5526f) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm), released on 2019-05-15T17:12:20Z. The update package is 147.5 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 e5507ad255ef376a3b4a0294ef221d82e27ff690.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-62954/EF16DE3C-758D-11E9-8EAC-C6A6B5D60F81/com_apple_MobileAsset_SoftwareUpdate/e5507ad255ef376a3b4a0294ef221d82e27ff690.zip