You need to download the Phathack DMS Tools. Connect the DMS to your computer and use the program in DMS Tools mode to set up the DMS to update the firmware in your Phatbox. You will want to select Mazda firmware and tick the box "Install non-hacked firmware." Once the DMS is updated, take it out to the car and insert it into the Phatbox (assuming everything is installed in your car). Power on the box by turning your key to the position it needs to be in for the radio to work. Once the box is on the green lights should begin to flash, indicating the update is being applied. You should then be able to turn the key off and leave it to update, for about 10-15 minutes. If all goes well, this should do the trick and the box should now work with your radio.