watchOS 3.2.3 (build 14V5751a) is an official Apple over-the-air update for the Apple Watch Series 1 (38mm), released on 2017-06-26T17:14:40Z. The update package is 23.73 MB. This is a delta (partial) update that requires 3.2.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c1ce66c3c2431cff71b3a02875cc3985f4c3c051.zip.