User`s guide

T-MOPSlcdSA User's Guide

Appendix B: BIOS Operation 64

19.12.2 BIOS Update or Recovery Step-by-Step

For a BIOS update or recovery please do the following:

1. Attach a null modem cable to the serial port of the system that requires an update

(“target”). Attach the other end of the null modem cable to a system running the terminal

program (“host”).

2. Make sure the new BIOS image file is accessible from the host system.

3. Start the terminal program on the host and open a new session. The session should use the

following communication parameters:

 Bits per second: 115200

 Data bits: 8

 Parity: None

 Stop bits: 1

4. Start the target system. The terminal on the host should display the following message:

“Press <SpaceBar> to invoke remote BIOS flash” (*). Immediately press the SpaceBar on

the host to confirm. If the SpaceBar is not pressed within a few seconds, the system will

skip the flash update and perform a normal boot procedure.

5. A second string will appear on the host terminal: “Begin remote BIOS flash? [y/n]”. Press

the <Y>’ key on the host to continue. If the <N> is pressed, the system will skip the flash

update and perform a normal boot procedure.

6. You will be prompted to upload the new BIOS file using the XMODEM protocol. Use the host

terminal program to select the proper BIOS image and transfer it to the target.

7. If the transfer from host to target is successful, the target will update the BIOS and indicate

success. Restart the system by switching the main power supply off and on. The system will

then reboot using the new BIOS image.

Notes:

(*) If the target system has multiple serial ports, only one will be enabled for Serial Flash. COM1 is

the default port. A system that does not display the ‘Press <SpaceBar> to invoke remote BIOS

flash’ string over the serial port does not have support for the Serial Flash feature.