watchOS 5.2.1 (16U5113a) for Apple Watch Series 4 (40mm, LTE) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date May 7, 2019 Upload Date May 4, 2019 Filename 3419d394f0296659dee5cc13e47becded51979dc.zip Filesize 1.4 GiB Identifier Watch4,3
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