Problem with Arduino BT

:'(

Hi, I got a problem with arduino bt.

I want to make the "blinking led example", but no success.

I create a connection with arduino bt on com 41. In the aruduino's ide I choose port com 41 and the board arduino bt. Ok, first time that I put a led in pin 13, it blinks very very fast. Then I try to upload the sketch but this errors:

avrdude: stk500_getsync(): not in sync: resp=0x00 avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51

I press the reset bottom, and the I re-upload the file. So an other errors, similar to previous but now

avrdude: stk500_disable(): program not in sync :o

but after this, led bliks as the example commands.

I try to upload again but errors remain:

avrdude: stk500_getsync(): not in sync: resp=0x00 avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51

The led still blinks as the example commands.

Please help, I don't know how to upload the example.

PS. i reach to upload new sketch if only I press the "reset" and the arduino ide is open, but anyway this errors appairs: avrdude: stk500_disable(): program not in sync

Thanks, sorry for my english.