I am trying to develop an application in .NET using WPF and using 32feet productions software solution. I want to be able to transmit an image from Windows 7 to Android using OBEX, there are several OBEX clients such as Astro and Medieval Bluetooth file transfer which i have used but nothing seems to work. My program tries to simplify the pairing process by specifying a 4 digit pin such as 0000 so that when we initiate a file transfer to the bluetooth address the user on the other hand just needs to push in 0000. I also seem to notice that the file transfer ftp seems to choose different ports each time, is there a way to predict this or keep this static? Last question, is there a way to send a file to Android without pairing? We try obex push but it doesnt seem to take it.