Restart the iPhone; exit Recovery / DFU Mode
Use this function to restart/reboot the iPhone automatically.
This only works in normal mode with iFuntastic support installed.

If the phone is in recovery mode or DFU mode, then you will have to use other tools, or use iTunes to restore.

When in normal mode, then you can restart the iPhone manually by pressing the 'Sleep/Wake' button on top of the phone until the red slider appears (after about 3 seconds.) Slide it, and the phone will shut off. Wait until the phone goes dark, then push the 'Sleep/Wake' button again for a second, and the Apple logo should appear. After a little while, the welcoming chirp will sound, and the phone is back in operation.

When the phone restarts, it performs certain operations that often help to get things back on track.