1) Press the Home button.
2) Press and hold the Play/Pause button until the display says E-00.
3) Press the V+ or TVDrive button. The display will say E-01.
4) Press the ch- button 4 times. The display will say 'hdd4'.
5) The V+ will then begin the reformat, and the display will say 'rft'. This may take up to 5 minutes. Afterwards the V+ will reboot normally
Try it