watchOS 5.1 (16R5584a) for Apple Watch Series 4 (40mm) ✗ 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 44657e056d4bfdc5b69fa859e6b8991715a627b5.zip Filesize 1.3 GiB Identifier Watch4,1
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