watchOS 5.1.3

watchOS

Version

5.1.3

Build ID

16S535

File Size

735.99 MB

Release Date

2019-01-22T18:11:37Z

Update Type

Normal release

Delta update - requires 4.3.2 installed first.

Download OTA

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

About This Update

watchOS 5.1.3 (build 16S535) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2019-01-22T18:11:37Z. The update package is 735.99 MB. This is a delta (partial) update that requires 4.3.2 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 03dd59ceaf10f1c85da5eee0f515080fe514718e.zip.

Direct URL

http://updates-http.cdn-apple.com/2019WinterFCS/patches/041-16650/E71C1988-15F5-11E9-BA10-03B74CC90A65/com_apple_MobileAsset_SoftwareUpdate/03dd59ceaf10f1c85da5eee0f515080fe514718e.zip