(this is based on US market which has identical requirements) you are going to need a flash drive (greater than 8gb) and a battery tender/battery jumper to keep the car battery from dying as the update will take min 20mins. You can google where to get the files or otherwise the main mazda website will have it after making an account (which also has the procedures for your car in your market). you are also going to need the hardware for it as well which is new cables and usb hub that needs to be installed after the update which on the Demio/Mazda 2/Toyota iA are a bit of a pain in the butt due to the arm rest being a paint to take apart.