Standard Firmata versus Old Standard Firmata

Hi

does anyone know if the use of 'Old Standard Firmata' will cause problems with Maxuino?
I have an old ATmega8 board which does work, but only seems to load Old Standard Firmata onto it
I know this can't connect with the Firmata test software, but wan't to know if there is any chance of finally connecting to Maxuino (pins not active in various current and old versions of Maxuino)

thank you all