SGH-A800 - Reflashing Firmware

[unrandomsam]

Hi I have a Samsung SGH-A800. That I think both screens are working on (when plugged into charger the charging sign appears on both screens). But when I power it on the main screen lights up but stays blue. (I think this is because of someone trying to unlock it unsucessfully and damaging the firmware). Does anyone know what I would need to restore the firmware (Cable, Software, Firmware ?)

Kind Regards

Sam