tvOS 11.4 (15L6577) 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 29, 2018 Upload Date May 18, 2018 Filename 29e282b27bee5b7becd33a6668b9b6a748a6bdaf.zip Filesize 1.2 GiB Identifier AppleTV5,3
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