http://www.senabluetooth.com/contact...20110620_1.php
http://www.senabluetooth.com/products/acc_SMH10-TIP.php
If anyone else is using a SENA SMH10 they are now offering $50 upgrades to their B version which uses different firmware. This offer is only good through August.
This upgrade changes the plug to micro USB, allowing future firmware upgrades, and allows for multiple users to talk at the same time rather than just 1v1. It also gives better audio quality and more BT devices that it can sync with.
I plan to do this offer this month sometime. Seems like an awesome way for this company to take care of its customers rather than force them to buy a whole new unit.