watchOS 5.1.3 (16S5531a) for Apple Watch Series 3 (38mm) ✗ 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 c6dacc15a6c48521b17fd18b2356947288222558.zip Filesize 1.3 GiB Identifier Watch3,3
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