GUys, I admire your work and 'courage' hacking into this thing.
Have any of you identified what each of the 12 pins on the base unit are used for? There are 12 and if I allow 4 for the mic, L-spkr, r-spkr and gnd PLUS 3 for the 3.5mm stereo input jack, that only makes 7. Just trying to understand if there are 5 spares or there are unique pairs used for the mic and each speaker or some other explanation. One of my pins has fallen out but so far all I've confirmed is my cellphone pairing still works OK. IF the pin that fell out is spare, I will be very happy. Cheers Chris