watchOS 5.1.3

watchOS

Version

5.1.3

Build ID

16S535

File Size

193.93 MB

Release Date

2019-01-22T18:13:27Z

Update Type

Normal release

Delta update - requires 5.0.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (44mm) →

About This Update

watchOS 5.1.3 (build 16S535) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2019-01-22T18:13:27Z. The update package is 193.93 MB. This is a delta (partial) update that requires 5.0.1 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 a7064f9a8729288b9bfec87bd502b9f19464d410.zip.

Direct URL

http://updates-http.cdn-apple.com/2019WinterFCS/patches/041-17225/C4A655F2-15F6-11E9-BD28-0ACA4CC90A65/com_apple_MobileAsset_SoftwareUpdate/a7064f9a8729288b9bfec87bd502b9f19464d410.zip