Found this app to unlock Bluetooth Stack on iPod Touch/iPhone
(Note the phone or touch has to be Jailbroken)http://www.roqy-bluetooth.net/wp/
You want to connect your iPod Touch / iPhone to a GPS bluetooth device, but it does not work? Apple does not provide this functionality by default, roqyBluetooth will help you!
What is roqyBluetooth?
roqyBluetooth (aka roqyBT) is a complete bluetooth stack which is taking the control of the bluetooth chip in your device over the official bluetooth. You can keep your official bluetooth off, roqyBluetooth works in parallel! roqy team provides all the software components (roqyGPS) to connect your iPod Touch / iPhone to a GPS « mouse »!
roqyBluetooth is available on Cydia and Rock package managers for jailbroken devices (search roqyBT).
Select your GPS
Watch raw data from your GPS
And then use any GPS application!