This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 14 December 2020 |
| Upload Date | 04 December 2020 |
| File Name | AppleTV5,3_14.3_18K561_Restore.ipsw |
| File Size | 2.65 GB |
| SHA256sum | 8f15e27690e918b20b72ab429fa0980c4e98e6f8dc9b16425d2e4da199d12c99 |
| MD5sum | 8f07a455bb38df45bb5946a1739441c2 |
| SHA1sum | 37f3a81aca85fad82a312301ee808da3bbe8226f |
| Identifier | AppleTV5,3 |
cd ~/Downloads.idevicerestore -e AppleTV5,3_14.3_18K561_Restore.ipsw and press Enter.