watchOS 5.3 (16U5558b) for Apple Watch Series 4 (40mm, LTE) ✗ 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 June 24, 2019 Upload Date June 20, 2019 Filename c9921a0fdffe1f2e517303465b89f8d5314dae1f.zip Filesize 1.4 GiB Identifier Watch4,3
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