How to perform a firmware upgrade the in the B450 using TeraTerm.

[#1]

1. 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.
2. 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.
3. Remove the B450 from the control panel.
4. Remove the cell card from the B450.
5. Set the address wheel on the B450 to 0 and reconnect the B450 to the control panel.
6. 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.
7. Open TeraTerm.                                                                                                                                                                            
8. 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
9. Press the keyboard ENTER key and [Enter Passcode] displays.  Enter the default Log-in password: B450.
10. Select 7: Firmware Update.            Figure 2 Select 7 Firmware Update
11. The screen displays; Start Xmodem Transfer of upgrade image file. Select File > Transfer > XMODEM  > Send…                                                                              Figure 3 XMODEM Send dialog
    
12. Select the firmware file.                                     Figure 4 Select the firmware file
13. Select Open to start the firmware update. The TeraTerm: XMODEM Send dialog box opens to indicate the update process.          Figure 5 XMODEM Send Progress                        
14. When the file transfer completes, the TeraTerm: XMODEM Send dialog box closes. A TeraTerm window displays a message about updating to firmware version “x.xx.xxx”, and the B450 automatically reboots.
    
    1. Notice!  Do not power off the module during this phase.  Powering off might cause permanent damage to the B450.
15. Close the TeraTerm session, and relaunch TeraTerm.
16. Log into TeraTerm to reestablish the connection. Communication between the control panel and B450 restores.
17. Remove power from the B450.
18. Place the cell card back into the B450.
19. Set the device address as required for the configuration in use.
20. Reconnect the B450 to the control panel.