watchOS 5.3 (16U5566a) for Apple Watch Series 1 (42mm) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date July 9, 2019 Upload Date July 3, 2019 Filename dbad2d37671daf8cee5b689eab1ad1026313cc50.zip Filesize 1.3 GiB Identifier Watch2,7
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