watchOS 5.1

watchOS

Version

5.1

Build ID

16R5589c

File Size

732.03 MB

Release Date

2018-10-22T17:18:53Z

Update Type

Normal release

Delta update - requires 4.3.2 installed first.

Download OTA

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

About This Update

watchOS 5.1 (build 16R5589c) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2018-10-22T17:18:53Z. The update package is 732.03 MB. This is a delta (partial) update that requires 4.3.2 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 a2b12c8a7fe9246775c7b180901a2c810bc55bc9.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-16303/4A3E49E8-D3BE-11E8-A02B-189655D8F596/com_apple_MobileAsset_SoftwareUpdate/a2b12c8a7fe9246775c7b180901a2c810bc55bc9.zip