Default Bluetooth restrictions on Cingular ROM

okay, so, i've got myself a Cingular 3100 with the original ROM image. and i want to get BT working 100% (OBEX FTP would be good... among other things)

does anyone know if the newer cingular rom maybe doesn't have these things locked? and/or if there's a 3rd party BT Stack that will work with the phone?

i also have an x51v, and it has the widdcomm stack (i think that's how it's spelt)... regardless, the new stack is WAY better than the MS one. but i'll do with just some reg settings or a replaced DLL to enable the extra functions...

TIA