watchOS 5.3 (16U5558b) for Apple Watch Series 1 (42mm) ✗ 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 4919ab73e297c2d60113d66bab68872b556af840.zip Filesize 1.3 GiB Identifier Watch2,7
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