Hi all, I want to replace a faulty driver board on a seagate ST3320418AS hdd. The firmware on that drive is CC45. I know I need to swap the rom chip over from the original board as it has the bios on it. My ques is does the firmware on another ST3320418AS drive need to be exactly the same as the original board or can it be similar like CC44 or CC49? just repeating this in case it went unnoticed. Does anyone know the answer?