watchOS 5.1 (16R5584a) 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 October 15, 2018 Upload Date October 11, 2018 Filename dff9e7e5a5d53f7c398ebebe6280235b58bad482.zip Filesize 1.3 GiB Identifier Watch4,2
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