Why the Arduino BT has problem to upload files?

I have been desparated to try get the Arduino BT-V06 working about 2 days already! I did try to use Arduino 0012 & modify the preferences.txt:

set the upload defaults

upload.verbose=true
upload.using=bootloader

set the serial port defaults

serial.port=COM5
serial.databits=8
serial.stopbits=1
serial.parity=N
serial.debug_rate=9600
serial.burn_rate=115200

Then save it before launching the Arduino 0012

I have external USB Bluetooth Dongle IVT BlueSoleil connected with the Arduino BT-V06 OK with COM5 (communication linking)

When launch Arduino 0012, I double-check the Tools/Board = Arduino BT & Tools/Serial Port = COM5

void setup()
{
Serial.begin(115200);
...
}

void loop()
{
...
}

I did re-compile the SketchBook without error, hit Reset button then UPLOAD the SketchBook after awhile it shows:

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

*) I did try the same with 0013 & 0014, the error are the same!

I do not know whatelse I can do? Would someone kindly helping me? :cry:

Thanks in-advanced

As a forum reply mentioning: after I modifying the preferences.txt (upload.verbose=true) then RESTART system once, it now can be upload successfully! :wink: