There is no .ecm in the file name just bin, but I got them from here, I'll run them through the ecm tools and see if that makes a difference.
No joy, I did just notice though that the size of the .bin file changes when I move it to the phone i.e. its going from 700Mb to 688Mb, could it be compressing as I move it onto the phone and would I need to do something about that?