This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 29 May 2018 |
| Upload Date | 18 May 2018 |
| File Name | AppleTV5,3_11.4_15L577_Restore.ipsw |
| File Size | 1.63 GB |
| SHA256sum | 6196f5a005050e93001002330e6004873be7d15a3e86d9c0464946f7e1663639 |
| MD5sum | 62544721821e7bd68afe9a7aad2dc69a |
| SHA1sum | 42b9d0a0cb2691b33a59e15461f55fe06fc2065a |
| Identifier | AppleTV5,3 |
cd ~/Downloads.idevicerestore -e AppleTV5,3_11.4_15L577_Restore.ipsw and press Enter.