watchOS 4.3 (15T5187e) for Apple Watch Series 3 (42mm) ✗ 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 February 21, 2018 Upload Date February 16, 2018 Filename bc218fe94ae5dfb5d2c305223e346da69b8e810d.zip Filesize 1.5 GiB Identifier Watch3,4
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