watchOS 5.1.3

watchOS

Version

5.1.3

Build ID

16S5523a

File Size

76.39 MB

Release Date

2018-12-10T18:10:08Z

Update Type

Normal release

Delta update - requires 5.1.2 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 1 (38mm) →

About This Update

watchOS 5.1.3 (build 16S5523a) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2018-12-10T18:10:08Z. The update package is 76.39 MB. This is a delta (partial) update that requires 5.1.2 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 08bc9f2d793242f65ae3f04472ec0fbe046048bc.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-25944/1EA861E8-F8DE-11E8-8B45-B6749F11E33E/com_apple_MobileAsset_SoftwareUpdate/08bc9f2d793242f65ae3f04472ec0fbe046048bc.zip