Mazda 6 Sport Stereo problems - Help!

I have a 52 reg Mazda 6 Sport - recently the battery was flattened and it had to be jumped. Everything works fine EXCEPT for the stereo. The Stereo turns on but all I get is the radio. Only the volume and tuning dials work, none of the other buttons (to select CD / radio, preset, scan, Auto-m, etc. are working). In addition, although the display shows the time and displays the tuning / station details, none of the buttons surrounding it (e.g. time settings) are working. The controls on the steering wheel relating to the stereo have ceased working also (cruise control is fine, though). I've checked the fuses and they 'look OK' but I am clueless about these matters so may have missed something obvious. There appears to be a couple of fuses relating to the stereo which doesn't help matters. Can anyone give me some advice on what I should be looking for or where the problem lies?
 
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