Navigate to http://US.Boschsecurity.com. Browse to: Product Catalog > Intrusion Alarm Systems > Conettix Communications > Conettix Communicators. Select the B450 Product Page and click on the Software Downloads Tab.
Download and save the latest firmware file to a location on the computer, then extract the files from the ZIP file. The firmware file required for use with TeraTerm ends with a *.kfw extension.
Remove the B450 from the control panel.
Remove the cell card from the B450.
Set the address wheel on the B450 to 0 and reconnect the B450 to the control panel.
Connect a USB A to USB A cable (Bosch p/n B99) between a computer and the B450. When using a store purchased cable, be sure to use a ‘Computer to Peripheral ‘cable and not a ‘Computer to Computer’ type cable.
The New connection dialogue opens. Click on the Serial radio button and select the port configured for the B450 and press OK. Figure 1 New Connection Page
Press the keyboard ENTER key and [Enter Passcode] displays. Enter the default Log-in password: B450.