tvOS 11.4 (15L5560b) 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 May 1, 2018 Upload Date April 25, 2018 Filename 2c390d9c2d4ed893a7376373ed4c9ee54e2ee0f2.zip Filesize 1.4 GiB Identifier AppleTV6,2
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