watchOS 4.2.3 (15S600b) 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 19, 2018 Upload Date February 16, 2018 Filename 6420f89abfede2600a5d008b0eb8fbfecb0115c6.zip Filesize 1.5 GiB Identifier Watch3,4
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