watchOS 5.1

watchOS

Version

5.1

Build ID

16R5584a

File Size

577.2 MB

Release Date

2018-10-15T17:09:41Z

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 (42mm) →

About This Update

watchOS 5.1 (build 16R5584a) is an official Apple over-the-air update for the Apple Watch Series 1 (42mm), released on 2018-10-15T17:09:41Z. The update package is 577.2 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 b2c02ef271ec5e95e359c45722c1be95e9ab1ccc.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-13451/A4DB9E9A-CD7F-11E8-A37D-9A444EDB3229/com_apple_MobileAsset_SoftwareUpdate/b2c02ef271ec5e95e359c45722c1be95e9ab1ccc.zip