
H3C AR 46 Series Routers Installation Manual
Chapter 5 Maintaining Software
5.2.2 Upgrading Image Files Using XModem
I. Upgrading the main Boot ROM system
Take these steps to upgrade the main Boot ROM system:
Step 1: Connect the console terminal as shown in Figure 4-1.
Step 2: Start the router and press <Ctrl+A> within five seconds after the message
"Starting…" appears to enter the small Boot ROM menu.
Step 3: Change the baud rate of the serial port on the RPU to a higher value. Refer
back to “Modify the serial interface parameters” in the subsection “Small Boot ROM
menu” in the section “Boot Menu”.
Note:
The default baud rate of the serial port on the RPU is 9600 bps. Skip this step if you do
not want to modify it; but if you change it, note to reset it to 9600 bps after file transfer is
completed.
Step 4: Enter <2> in the small Boot ROM menu to have the system download the image
file from the console terminal to the SDRAM using XModem. If system check is passed,
the system begins to upgrade the Boot Rom image. The console screen displays:
Please Select File.
XMODEM downloading ...CC
Step 5: Select [Transfer/Send file…] in the
HyperTerminal
window when the above
information appears, as shown in the following figure.
Figure 5-3
Select to send file
In the displayed
Send file
dialog box, select XModem for the Protocol field and type the
path and name of the image file in the Filename field. Then click <Send>. If the terminal
is not ready yet, press <Ctrl+X> to quit downloading.
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