tvOS 11.3 (15L5186e) 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 February 21, 2018 Upload Date February 17, 2018 Filename c86503f5b9495e762d019bf7b2710654e4d1c5ca.zip Filesize 1.4 GiB Identifier AppleTV6,2
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