Pinchies,
Not yet as I am trying to get a grass roots handle on the bootstrap process (initialisation) deployed by MVix.
MVix wont release the source code for their firmware, and they have that serial number protection built in somewhere. That aspect worries me in terms of recovering to the MVix setup once we depart from it. HWguru has a post that shows we can get at the firmware but we need to know what we can do with that and how we can manipulate it.
The procedure I have is one that dumps everything MVix and replaces it with the standard linux based flash memory bootstrap process, using an open source bootloader and the Planex firmware that can be held entirely inside the flash memory.
You will need a JTAG connecor to flash the memory and a 5V to 3.3V serial interface cable to access the bootloader menu. And you need to solder header pins to the MBox Mobo to connect these cables.
I'll post the raw procedure as given by CSTAMAS82 if you really want to dive in without the fundamentals in place.