This firmware is signed. This means that you can restore to it in iTunes.
| Release Date | Invalid Date |
| Upload Date | 18 November 2010 |
| File Name | iPod2,1_4.2.1_8C148_Restore.ipsw |
| File Size | 0.34 GB |
| SHA256sum | d1b96e80504d817b5398822e2027b1c896227e1de3674d08a100330ea5a5a8d4 |
| MD5sum | 0045e3543647e23470b84c2c1de96ab1 |
| SHA1sum | b9efddc7bb4350c237a8d3846af61bbfc8a2f647 |
| Identifier | iPod2,1 |
cd ~/Downloads.idevicerestore -e iPod2,1_4.2.1_8C148_Restore.ipsw and press Enter.