tvOS 11.4 (15L5570a) 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, 2018 Upload Date May 3, 2018 Filename 1eead5fcf73fd5042fe81c42edb324431adcc997.zip Filesize 1.2 GiB Identifier AppleTV5,3
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