You can't restore a 3G iPad 2 using saved SHSH blobs. The baseband flash fails and there is no way to fix it.
Even with saved blobs a 3G iPad 2 cannot be restored. Because the baseband SHSH blobs are unique to each restore and cannot be reapplied. This will cause the restore to fail. The only thing you can currently restore to is iOS 5.
How can i change the name on my iDevice as i bought it of someone and want my name on it