getIPSW
Apple Watch Series 3 (38mm, LTE) Apple Watch Series 3 (38mm, LTE) Watch3,1
OTA Update Unsigned 16R5589c

watchOS 5.1

OS
watchOS
Version
5.1
Build ID
16R5589c
File Size
514.53 MB
Release Date
2018-10-22T17:19:19Z
Update Type
Normal release
Delta update - requires 5.0 installed first.

About This Update

watchOS 5.1 (build 16R5589c) is an official Apple over-the-air update for the Apple Watch Series 3 (38mm, LTE), released on 2018-10-22T17:19:19Z. The update package is 514.53 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 3834ca4ee567404e2748467ac3cca5c2cf7af2e7.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-16307/A545FCB0-D3BD-11E8-83B8-098655D8F596/com_apple_MobileAsset_SoftwareUpdate/3834ca4ee567404e2748467ac3cca5c2cf7af2e7.zip

Filename

3834ca4ee567404e2748467ac3cca5c2cf7af2e7.zip

Other Devices

© 2026 getIPSW. Firmware data provided by ipswdl.com API. Not affiliated with Apple Inc.