tvOS 12.1 (16J5600a) 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 October 15, 2018 Upload Date October 11, 2018 Filename e25ba4edf974f3aac5006c056ab32a62b7db53e2.zip Filesize 1.4 GiB Identifier AppleTV5,3
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