![](/images/new-backgrounds/1265244/265244399x1.webp)
2.Connect the other end of the cable to the serial port on your PC (using the provided 9- to
Download the New Bridge Module Software
This step copies the new Bridge Module software (UDK) to the Flash EPROM on the Bridge Module. Note that this procedure creates a file called profile.cmd in the PROCOMM directory. If you currently have a file with that name, rename it before the UDK download so that it does not get overwritten.
Warning: Do not interrupt power to the concentrator during the download process.
Follow the instructions below:
1.Make a backup copy of the 3Com UDK diskette.
2.Place the 3Com diskette in the floppy drive and change to that drive by typing a: or b:.
3.Type the command UDK and press [ENTER] to display the initial installation screen as shown in Figure
6 - 8 ONline Ethernet Bridge Module Installation and Operation Guide