http error 405 with mobile flex application - actionscript-3

Question

i am having an issue everytime i try to upload an image from a flex mobile application to an IIS directory and this directory is configerd to be web application
i get an HTTP error 405 'method not allowed'
hence i dont use any script from the server side and i dont want to use any ..
and the code for the upload button is
protected function getImage(event:Event):void
{
var image:Bitmap = Bitmap(event.target.content);
bitmapData = image.bitmapData;
byte = jpgEncoder.encode(bitmapData); // bytearray
uploadrequest = new URLRequest("http://localhost/ProblmeImages/");
var header:URLRequestHeader = new URLRequestHeader("Content-type","application/octet-stream");
uploadrequest.requestHeaders.push(header);
uploadrequest.method = URLRequestMethod.PUT;
uploadrequest.data = byte;
urlloader1.dataFormat = URLLoaderDataFormat.BINARY;
urlloader1.addEventListener(Event.COMPLETE,uploaded);
urlloader1.addEventListener(HTTPStatusEvent.HTTP_RESPONSE_STATUS,displayerror);
urlloader1.load(uploadrequest);
}
protected function uploaded(event:Event):void
{
PopUpManager.removePopUp(Alert);
errormsg = "Done!";
var str:String = urlloader1.data;
PopUpManager.addPopUp(Alert,this,true);
PopUpManager.centerPopUp(Alert);
}
protected function displayerror(event:Event):void
{
errormsg = httpresponsemsg;
PopUpManager.addPopUp(Alert,this,true);
PopUpManager.centerPopUp(Alert);
}