watchOS 5.3.1 (16U600) for Apple Watch Series 4 (40mm) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
potential future use. They might also be useful if you're doing research.
Release Date August 26, 2019 Upload Date August 22, 2019 Filename 83f1a5e427cecd48119de3e87c08ea37899fb4c0.zip Filesize 1.3 GiB Identifier Watch4,1
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