watchOS 5.1.3

watchOS

Version

5.1.3

Build ID

16S5535a

File Size

752.1 MB

Release Date

2019-01-07T18:16:41Z

Update Type

Normal release

Delta update - requires 4.3.1 installed first.

Download OTA

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

About This Update

watchOS 5.1.3 (build 16S5535a) is an official Apple over-the-air update for the Apple Watch Series 3 (42mm), released on 2019-01-07T18:16:41Z. The update package is 752.1 MB. This is a delta (partial) update that requires 4.3.1 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 bb0ce84e82dd6251f77dd8b65aa656307bb84567.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-30048/9E327F02-1049-11E9-AD4D-64AF3DF199C7/com_apple_MobileAsset_SoftwareUpdate/bb0ce84e82dd6251f77dd8b65aa656307bb84567.zip