watchOS 5.1.3

watchOS

Version

5.1.3

Build ID

16S535

File Size

797.32 MB

Release Date

2019-01-22T18:11:47Z

Update Type

Normal release

Delta update - requires 4.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 3 (38mm, LTE) →

About This Update

watchOS 5.1.3 (build 16S535) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2019-01-22T18:11:47Z. The update package is 797.32 MB. This is a delta (partial) update that requires 4.2 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 4822c880a57c1de06a01ab3caec697bfa117a914.zip.

Direct URL

http://updates-http.cdn-apple.com/2019WinterFCS/patches/041-17335/EFB7453A-15F6-11E9-B609-76CE4CC90A65/com_apple_MobileAsset_SoftwareUpdate/4822c880a57c1de06a01ab3caec697bfa117a914.zip