This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 22 January 2019 |
| Upload Date | 11 January 2019 |
| File Name | AppleTV5,3_12.1.2_16K534_Restore.ipsw |
| File Size | 1.76 GB |
| SHA256sum | |
| MD5sum | a5bf22453668e1f2a45572747391575e |
| SHA1sum | e65cc2f3f0b475dd2565757632b87d7c9fbf236d |
| Identifier | AppleTV5,3 |
cd ~/Downloads.idevicerestore -e AppleTV5,3_12.1.2_16K534_Restore.ipsw and press Enter.