Sorry to see you are still in the same situation.
I am not certain it's a firmware downgrade problem as I suggested before, but the "telephony functions disabled" message does show up in those situations.
If you would care to try with the firmware I suggested before the direct link from nokia navifirm servers is this
http://nds2.fds-fire.nokia.com/fdp/i...ED_MR0_ARM.bin