watchOS 5.1.3

watchOS

Version

5.1.3

Build ID

16S535

File Size

821.37 MB

Release Date

2019-01-22T18:11:59Z

Update Type

Normal release

Delta update - requires 4.0.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (42mm, LTE) →

About This Update

watchOS 5.1.3 (build 16S535) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm, LTE), released on 2019-01-22T18:11:59Z. The update package is 821.37 MB. This is a delta (partial) update that requires 4.0.1 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 1f4a83463cf34053a575cf83a57c9f35094fde67.zip.

Direct URL

http://updates-http.cdn-apple.com/2019WinterFCS/patches/041-16631/E71C15D2-15F5-11E9-B51B-FDB64CC90A65/com_apple_MobileAsset_SoftwareUpdate/1f4a83463cf34053a575cf83a57c9f35094fde67.zip