watchOS 5.3 (16U5537b) for Apple Watch Series 4 (44mm) ✗ 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 May 28, 2019 Upload Date May 23, 2019 Filename 872cc3d54ce0b352dcaa62ac4e4e1afded099bb6.zip Filesize 1.3 GiB Identifier Watch4,2
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