This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | Invalid Date |
| Upload Date | 13 March 2013 |
| File Name | AppleTV2,1_5.2.1_10B329a_Restore.ipsw |
| File Size | 0.55 GB |
| SHA256sum | aafa7b74e7ccb7095285f2e7d75d1e2f7f8695ddcf50187a21e5e690b0de0216 |
| MD5sum | 4d8b9d5c193a5e22d6c7b73e8632d26c |
| SHA1sum | bd51213ae4c80b3080fa0a7a069fc53aa031a79f |
| Identifier | AppleTV2,1 |
cd ~/Downloads.idevicerestore -e AppleTV2,1_5.2.1_10B329a_Restore.ipsw and press Enter.