Nokia 7370

So I have cingular and in order for th ephone to work on that network, it needs to have a quad band (850/900/1800/1900). the phone currently only has 900-1900. I called nokia and they said they had no patches availible for the phone. Is there anywhere else i can get a patch? would this be the same situation with all providers? i think its so pretty and i dont wanna give it up.

thanks!