tvOS 12.3 (16M5151a) 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 May 7, 2019 Upload Date May 5, 2019 Filename bbc57c0057de72140640429d10fd3f0af7d0aed0.zip Filesize 1.4 GiB Identifier AppleTV5,3
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