tvOS 11.4 (15L5560b) 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 1, 2018 Upload Date April 25, 2018 Filename 0a87579a9fa421e7a7fd9f09ebc901db12211feb.zip Filesize 1.2 GiB Identifier AppleTV5,3
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