Hi all I have purchased a 2007 elite which has v1.0 installed and want to update it to v1.45. I have in the past updated many of these with out any problems.. The problem I have, is the unit will not enter Update mode, neither will it enter the self test mode. I hold down the stop button and add power but it just goes into normal operating mode, same with Loco button for self test. Anyone come across this before? Thanks Ken.