Is the HD Guide 11.01.13 edition updrade meant for the DCX3400? If so how do you download/install it? How do you find out what edition you currently have? What upgrades are available for the DCX3400 and how do you get them, assuming you don't already have them? My DCX3400 is working very well but I sure like the guide features of the DCX3510, does that mean I have to get a DCX3510, can't just update the firmware in mine? Thanks.