watchOS 4.3.1 (15T567) for Apple Watch Series 1 (38mm) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date May 29, 2018 Upload Date May 18, 2018 Filename f0b5bd24e016cb8fe9bbf43da1ad66218d106f72.zip Filesize 1.1 GiB Identifier Watch2,6
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