The problem occurs when the device's baseband has a higher version number than the baseband in the firmware you restored to.Just set auto-boot true in i Recovery or use i REB/Tiny Umbrella/Rec Boot.Restart computer; change USB port; reinstall system.
This occurs when you try to downgrade your device's baseband.
This error is common when downgrading i Phones and 3G i Pads.
You are using the wrong firmware file (or it's corrupt).
Download the correct firmware file that matches your device.
Missing system files or corrupt data in i Tunes installation.