tvOS 11.3 (15L5211b) for Apple TV 4K ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date March 20, 2018 Upload Date March 16, 2018 Filename aadaefd788708a204dd39010b4aa4ff1be03f813.zip Filesize 1.4 GiB Identifier AppleTV6,2
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