This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | Invalid Date |
| Upload Date | 29 February 2012 |
| File Name | iPad2,1_5.1_9B176_Restore.ipsw |
| File Size | 0.71 GB |
| SHA256sum | 8b91e8125c62a0d8b5b85be6014906af815b551388cef07644c32734e78fbc8b |
| MD5sum | 8243a202466be74c06d19b71e48388c1 |
| SHA1sum | 9ad05caa469906f91bec4627a25132e9f9859720 |
| Identifier | iPad2,1 |
cd ~/Downloads.idevicerestore -e iPad2,1_5.1_9B176_Restore.ipsw and press Enter.