watchOS 5.3.5 (16U652) for Apple Watch Series 4 (40mm) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date February 18, 2020 Upload Date February 11, 2020 Filename 60354155fff1213c8eb8f51a375ec709a51e4a5c.zip Filesize 1.3 GiB Identifier Watch4,1
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