watchOS 5.2.1 (16U113) 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 May 13, 2019 Upload Date May 6, 2019 Filename d7eb0dfb38f3afd706dc919442c771bb7d515f30.zip Filesize 1.3 GiB Identifier Watch4,1
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