watchOS 4.1

watchOS

Version

4.1

Build ID

15R5823c

File Size

545.36 MB

Release Date

2017-09-27T16:59:21Z

Update Type

Normal release

Delta update - requires 3.2.2 installed first.

Download OTA

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

About This Update

watchOS 4.1 (build 15R5823c) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2017-09-27T16:59:21Z. The update package is 545.36 MB. This is a delta (partial) update that requires 3.2.2 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 f481a274c2825aa94a38868fb45f22654380ac8e.zip.

Direct URL

http://appldnld.apple.com/watchos4.1seeds/091-29636-20170927-4AB92BDA-9FBD-11E7-97F4-B4506B179ABE/com_apple_MobileAsset_SoftwareUpdate/f481a274c2825aa94a38868fb45f22654380ac8e.zip