hello, can anyone help me? I bought a Fiat Punto off my friend, but the the stereo doesn't seem to be working as the battery went dead. It's an M reg, the stereo is the standard Fiat stereo. The manual that came with the stereo suggests that the code should be engraved on the side of the stereo. I've tried inputting all different combinations of the numbers I've found, but still it's not working! Any help would be very gratefully received. Thanks!