Hi, great turorial! Everything is clear except the MDM mode: I'm using the RN42-XV Bluetooth module to wireless program an Fio board but I can't have the DTR or RTS signals working to drive the Reset pin. I pulled low BT pins UART_CTS, DCD (PIO3), DSR (PIO6) and CTS (PIO7). The only profile that seems to drive remote DTR & RTS is MDM SPP (the Roving networks datasheet states that profiles DUN should also drive them but I can't see that). But with the MDM SPP profile, the device is automatically recognized as a keyboard which prevents use of the terminal or the Arduino IDE. Does anybody have a clue ?