watchOS 5.1

watchOS

Version

5.1

Build ID

16R5589c

File Size

147.49 MB

Release Date

2018-10-22T17:19:58Z

Update Type

Normal release

Delta update - requires 5.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for Apple Watch Series 4 (44mm) →

About This Update

watchOS 5.1 (build 16R5589c) is an official Apple over-the-air update for the Apple Watch Series 4 (44mm), released on 2018-10-22T17:19:58Z. The update package is 147.49 MB. This is a delta (partial) update that requires 5.1 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 0cd41ee2b23cff10693c05cdb252301d3fb9a324.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-16310/3A1DF078-D3BD-11E8-BCB6-487655D8F596/com_apple_MobileAsset_SoftwareUpdate/0cd41ee2b23cff10693c05cdb252301d3fb9a324.zip