Why is it trying to tftp a config file?
mvpmc allows you to have a config file on your tftp server so that you can customize your use of mvpmc to suit your needs. If the config file does not exist, mvpmc will start with default options. This config file is the name of your dongle.bin bootfile, with .config appended to it (ie, dongle.bin.config). This config file is a shell script that will be executed as the last step of booting the MediaMVP. You should add things here to do whatever setup you need for your environment. For example, you might want to set the date, mount an NFS filesystem, and start mvpmc with whatever options you need.