watchOS 5.3 (16U5558b) 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 June 24, 2019 Upload Date June 20, 2019 Filename 55829e90a6557c74baffe54c866653b7e658bf3d.zip Filesize 1.3 GiB Identifier Watch2,6
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