watchOS 5.1.3 (16S5523a) for Apple Watch Series 3 (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 10, 2018 Upload Date December 5, 2018 Filename fc51c12c5dc75b9f7b46a9e94a7a094497fb06d1.zip Filesize 1.3 GiB Identifier Watch3,4
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