watchOS 5.3 (16U5545c) 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 11, 2019 Upload Date June 6, 2019 Filename 5d21988a50d4f377e70b1942650dacd94bb26d38.zip Filesize 1.3 GiB Identifier Watch2,6
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