tvOS 12.3 (16M5146a) 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 April 29, 2019 Upload Date April 25, 2019 Filename 118af9a482c0cf7a8f6a83e1355762fc34056c07.zip Filesize 1.4 GiB Identifier AppleTV5,3
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