I have had Cat Techs download flash files to my C9 engine more than once, the last time while I was at the BAC Ralley in Prineville in 2007. They used the EMC port located above the start batteries using a lap top computer, taking only a few minutes. Each time the downloads were ordered by Cat to address a problem with the C9. I have not heard of any new downloads . Joe House 2005 C9.
