watchOS 5.3.1 (16U600) for Apple Watch Series 4 (44mm, 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 August 26, 2019 Upload Date August 22, 2019 Filename e863f515afd29f4869fa70d0e900475bc3f83b75.zip Filesize 1.3 GiB Identifier Watch4,4
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