This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | Invalid Date |
| Upload Date | 19 November 2010 |
| File Name | AppleTV2,1_4.2_8C150_Restore.ipsw |
| File Size | 0.26 GB |
| SHA256sum | d05f9d0240952965b114f1f1650d9302d8d2254ee48455e75e398f44b5879fe7 |
| MD5sum | 4980214fe7a65e2624aaff394f106e06 |
| SHA1sum | 58f9ab479783dad3dff3834452abc2917aaef2a5 |
| Identifier | AppleTV2,1 |
cd ~/Downloads.idevicerestore -e AppleTV2,1_4.2_8C150_Restore.ipsw and press Enter.