tvOS 13.3.1 (17K5795a) for Apple TV 4 (2015) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date January 22, 2020 Upload Date January 17, 2020 Filename ddb1c7e3a53d14ba68aa1363b78dce3365f92e92.zip Filesize 1.6 GiB Identifier AppleTV5,3
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