Chapter 7: BIOS
7-29
The "Host system" should also have a serial port and a terminal program that
•
supports XModem Transfer protocol (Hyper Terminal for the Windows operating
systems, and minicom for Linux/FreeSBD, etc.).
A Null_modem serial cable
•
How to use Serial Flash for Boot Sector Recovery
Connect a Null_modem serial cable between the target system and the host
1.
system that runs the terminal program.
Make sure that the new BIOS Image fi le is accessible for the host system.
2.
Start the terminal program on the host system and create a new connection.
3.
Use the following communication parameters for the new connection.
Bits per second: 115200 bits/sec.
•
Data Bits: 8
•
Parity: None
•
Stop Bit: 1
•
Flow Control: None
•
Power on your system and click the <Connect> button in the Hyper Terminal.
4.
The terminal screen will display the following messages.
Press <SpaceBar> to update BIOS.
Confirm update BIOS? (y/n) y
Begin remote BIOS flash? (y/n) y
Starting remote flash.
Upload new BIOS file using Xmodem protocol.
Following the instructions given on the screen to update the BIOS. These
5.
instructions are also shown below.
a. At the prompt, press the <SpaceBar> to update the BIOS.
b. When asked to confi rm BIOS updating, press <y> to confi rm BIOS updates.
c. Press <y> again to begin fl ashing BIOS remotely.
Note
: Be sure to complete Steps a~c above quickly because you have a
second or less to do so.
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