tvOS 13.3.1 (17K5792a) 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 14, 2020 Upload Date January 10, 2020 Filename 9261de159f75bcdbcf49d021658b303a5ceb6558.zip Filesize 1.6 GiB Identifier AppleTV5,3
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