watchOS 5.3

watchOS

Version

5.3

Build ID

16U5526f

File Size

144.61 MB

Release Date

2019-05-15T17:12:51Z

Update Type

Normal release

Delta update - requires 5.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (40mm, LTE) →

About This Update

watchOS 5.3 (build 16U5526f) is an official Apple over-the-air update for the Apple Watch Series 4 (40mm, LTE), released on 2019-05-15T17:12:51Z. The update package is 144.61 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 62989c53624aced546a4815624733b9da3982896.zip.

Direct URL

http://updates-http.cdn-apple.com/2019SpringSeed/patches/041-63138/CC74E4F0-758D-11E9-893E-B3EB1491BEBF/com_apple_MobileAsset_SoftwareUpdate/62989c53624aced546a4815624733b9da3982896.zip