Bluetooth - Multiplexing mode

Hi there. Anyone knows how I can get more than one simultaneous connection with a bluetooth kit? Modem/SMD Smirf/Mitsumi/BGB203 etc

I currently have a Mitsumi and a BGB203. The former supports multiplexing but the new one doesn’t.

Is there a way to change or make a custom firmware for the BGB203?

With best regards

Carlos Sobrinho