In all tested situations the software from your phone is not the problem if you can't connect it over infrared. The problem in such situations was the pc-equipment or the pc-configuration. If you have problems please look first in pc-section.
To get the software-version from your phone press in idle-mode:
*#0000#
6100
V 4.73, 22-04-98, NSE-3
V 5.24, 14-09-98, NSE-3
6150
V 4.01, 23-09-98
V 4.12, 02-12-98, NSM-1
V 5.02, 02-02-99, NSM-1