I was hoping to use a BGT-31 with the GPS Speed Talker app so I could hear my speed while windsurfing. However, I discovered that all bluetooth functions are not available in the settings menu anymore! I know that they were there when I got the unit because I played around with it, but apparently, they got lost when upgrading the firmware. I tried re-installing the older (V1.3) firmware from the Locosys support site, but that did not restore the bluetooth menu options.
This is a bit of a bummer, because the GT-31 is more accurate than the GPS in the Android phone that I am using. Hearing the speed while sailing is a great thing for fine-tuning stance etc., and the BGT-31 would be perfect. I tried contacting Tom Chalko using the form on his web site, but got no response.
Any suggestions would be very welcome. Otherwise, I'd say: do not update the firmware on a new BGT-31!