watchOS 5.3 (16U5526f) 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 May 15, 2019 Upload Date May 13, 2019 Filename 738b2950e137757c3909e298d0a6beadefaf39ae.zip Filesize 1.3 GiB Identifier Watch2,7
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