watchOS 5.1.3

watchOS

Version

5.1.3

Build ID

16S535

File Size

740.76 MB

Release Date

2019-01-22T18:10:45Z

Update Type

Normal release

Delta update - requires 4.3 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 2 (38mm) →

About This Update

watchOS 5.1.3 (build 16S535) is an official Apple over-the-air update for the Apple Watch Series 2 (38mm), released on 2019-01-22T18:10:45Z. The update package is 740.76 MB. This is a delta (partial) update that requires 4.3 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 8aa1c6cf5ab42600ba535afaa7801ee749e66615.zip.

Direct URL

http://updates-http.cdn-apple.com/2019WinterFCS/patches/041-17130/B233835E-15F6-11E9-8B18-03C84CC90A65/com_apple_MobileAsset_SoftwareUpdate/8aa1c6cf5ab42600ba535afaa7801ee749e66615.zip