watchOS 9.0

watchOS

Version

9.0

Build ID

15S600b

File Size

972.75 MB

Release Date

2018-02-19T21:17:06Z

Update Type

Normal release

Delta update - requires 8.2.1 installed first.

Download OTA

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

About This Update

watchOS 9.0 (build 15S600b) is an official Apple over-the-air update for the Apple Watch (38mm), released on 2018-02-19T21:17:06Z. The update package is 972.75 MB. This is a delta (partial) update that requires 8.2.1 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 29a78de35e696bb6b68a2e6c19d2cb7d99db9c40.zip.

Direct URL

http://appldnld.apple.com/watchos4.2.3/091-69498-20180219-A8598DF2-1312-11E8-8310-8497E0A71A1F/com_apple_MobileAsset_SoftwareUpdate/29a78de35e696bb6b68a2e6c19d2cb7d99db9c40.zip