watchOS 5.3 (16U569) for Apple Watch Series 4 (40mm) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
potential future use. They might also be useful if you're doing research.
Release Date July 22, 2019 Upload Date July 16, 2019 Filename 21849453ae26c4caed6b227f0be5f02986a9152d.zip Filesize 1.3 GiB Identifier Watch4,1
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