tvOS 11.2.1 (15K6152) 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 December 13, 2017 Upload Date December 10, 2017 Filename 7d8de37145ef91fa2761b8ac31aed1d523e06d65.zip Filesize 1.4 GiB Identifier AppleTV6,2
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