I have a yamada 6100 and was told it can play AVI files( is avi a divx?) when i put a disc with avi on it ejects it straight away. I have also heard about firmware but not sure what it is or if it even applies to me. I thought it was an update to a dvd player? if so how do i apply,I am an amatuer as you can probably guess so am in need of some helpppppppppppppp please