watchOS 5.3 (16U5566a) for Apple Watch Series 4 (44mm) ✗ 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 July 9, 2019 Upload Date July 3, 2019 Filename d2386184f5898ab417211abf0ea3e6043f416e57.zip Filesize 1.3 GiB Identifier Watch4,2
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