Bhushan : The stand that flash memory is not reprogrammable..

J Khanna : They are not saying that. They are saying flash memory has no program and only symbols. They are storing symbols not software. As far as microcontorller in the CU is concerned, it is agnostic, it doesn't recognize party name or candidte name. What it recognises is the buttons on the Ballot Unit. Buttons in the BU are interchangeable. Manufacturer doesn't know which party is going to be allotted which button.