watchOS 5.1.3 (16S5531a) for Apple Watch Series 2 (42mm) ✗ 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 December 19, 2018 Upload Date December 17, 2018 Filename b43fd81b22cc45d42bf83180f25cb77531124618.zip Filesize 1.3 GiB Identifier Watch2,4
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