Arduino BT avrdude: ser_send(): write error: sorry no info avail

[ZazOufUmI]

Hello,

I have a problem for uploading a test program to my arduino BT.
First I've got a problem because I didn't push the button to sync the communication. Now this problem is ok.

But now i've got this new error message :
avrdude: ser_send(): write error: sorry no info avail

I don't know how to fix it. Someone know this problem ?

I install the arduino BT on my labtop and pairing it with 12345, it create two ports COM (30 and 40).
The port 40 is always available but I choose the port 30 (appear only when the arduino BT is supplied), and I choose the right board Arduino BT ATMEGA 328.

Thank you

[ZazOufUmI]

I found a solution by putting upload.verbose=true in preference.txt

So I understood that the baud rate on windows COM30 must be 19200.