watchOS 5.1

watchOS

Version

5.1

Build ID

16R5584a

File Size

514.42 MB

Release Date

2018-10-15T17:09:33Z

Update Type

Normal release

Delta update - requires 5.0 installed first.

Download OTA

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

About This Update

watchOS 5.1 (build 16R5584a) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2018-10-15T17:09:33Z. The update package is 514.42 MB. This is a delta (partial) update that requires 5.0 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 257a490166d1f1d3694138e9d61da9cdcefa0e5c.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-13478/2214D940-CD7F-11E8-9264-8B6232E6A5F3/com_apple_MobileAsset_SoftwareUpdate/257a490166d1f1d3694138e9d61da9cdcefa0e5c.zip