watchOS 5.3 (build 16U5569a) is an official Apple over-the-air update for the Apple Watch Series 2 (42mm), released on 2019-07-16T17:14:12Z. The update package is 1.27 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ef3603d652812fe3610928891ea14944af52d68e.zip.