This firmware is signed. This means that you can restore to it in iTunes.
| Release Date | Invalid Date | 
| Upload Date | 03 September 2010 | 
| File Name | iPod2,1_4.1_8B117_Restore.ipsw | 
| File Size | 0.32 GB | 
| SHA256sum | 91322d7924fb8e9d2cecc35ea9907b43d5ff1f412c825b84146cf58db59bad67 | 
| MD5sum | 9f8a1978f053ec96926e535bb57ac171 | 
| SHA1sum | 97abde6207660bd876fd476275dd526d0dcf3d19 | 
| Identifier | iPod2,1 | 
cd ~/Downloads.idevicerestore -e iPod2,1_4.1_8B117_Restore.ipsw and press Enter.