In order to determine this, open up the GPSInfo utility (http://www.usglobalsat.com/store/downloads/GPSInfo.zip
). Select the proper com port and set the baud rate to 4800. Click on Start GPS. After a few seconds, press the Cold Start button and after a second, press the Close GPS button. In the first few NMEA sentences, you should be able to see the version. It should look like something below:
You could also take a look at the FW Version field below the Sirf Version and besides the Baud Rate.