watchOS 4.3

watchOS

Version

4.3

Build ID

15T5209a

File Size

345.34 MB

Release Date

2018-03-12T20:06:52Z

Update Type

Normal release

Delta update - requires 4.0 installed first.

Download OTA

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About This Update

watchOS 4.3 (build 15T5209a) is an official Apple over-the-air update for the Apple Watch (38mm), released on 2018-03-12T20:06:52Z. The update package is 345.34 MB. This is a delta (partial) update that requires 4.0 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 e0f7b2b2117cc9c57dae97e8307fe13b313f4801.zip.

Direct URL

http://appldnld.apple.com/watchos4.3seed/091-72735-20180221-5A6A0578-23D3-11E8-BFF3-39845B3DAFD9/com_apple_MobileAsset_SoftwareUpdate/e0f7b2b2117cc9c57dae97e8307fe13b313f4801.zip