getIPSW
Apple Watch Series 2 (42mm) Apple Watch Series 2 (42mm) Watch2,4
OTA Update Unsigned 16R5568d

watchOS 5.1

OS
watchOS
Version
5.1
Build ID
16R5568d
File Size
410.28 MB
Release Date
2018-10-02T17:14:20Z
Update Type
Normal release
Delta update - requires 5.0 installed first.

About This Update

watchOS 5.1 (build 16R5568d) is an official Apple over-the-air update for the Apple Watch Series 2 (42mm), released on 2018-10-02T17:14:20Z. The update package is 410.28 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 8a36fd66cf6d059f70f5aa232e9dee975d9f766d.zip.

Direct URL

http://updates-http.cdn-apple.com/2018FallSeed/patches/041-08283/17A1CEEC-C275-11E8-BD5F-D96CD44DBAD7/com_apple_MobileAsset_SoftwareUpdate/8a36fd66cf6d059f70f5aa232e9dee975d9f766d.zip

Filename

8a36fd66cf6d059f70f5aa232e9dee975d9f766d.zip

Other Devices

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