watchOS 5.1 (16R5577c) 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 9, 2018 Upload Date October 5, 2018 Filename bd05a9a5827b9afec1a633d40e659c70062548fd.zip Filesize 1.3 GiB Identifier Watch4,2
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