watchOS 5.1 (16R5559d) for Apple Watch Series 4 (44mm, LTE) ✗ 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 September 18, 2018 Upload Date September 14, 2018 Filename d886abe5b225813b50bfdb3cfada663e72a44c8e.zip Filesize 1.4 GiB Identifier Watch4,4
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