watchOS 5.3 (16U5566a) 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 July 9, 2019 Upload Date July 3, 2019 Filename d85fb31a7dd548fe4a97dd5ad19eb96ce9669e7b.zip Filesize 1.4 GiB Identifier Watch4,3
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