LG PM-325

I have had my phone for few months so far and I just recently bought a USB Bluetooth adapted for my PC. My idea was to be able to connect my phone with the PC and swap files between. It seems to me that this is impossible. I can get it to work in DUN mode but can't get it to connect. The phone always gives me the message that "connection failed". My USB BT Adapter sees the phone. I read some messages in the forum and as far as I get it this phone is disabled for OBEX. My question are - is there a way to get that "OBEX" function to work? Do I need to use a special software for that? Can I unlock my self that function?
I already talked to Sprint and a guy from their Bluetooth department gave me lame explanation that my phone does not work on ...
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