3Com 5000 Series Installation Manual page 69

3Com Router 5000 Family
Installation Guide
Caution:
This upgrade approach upgrades only a portion of the Boot ROM image, so you can
make a second attempt once errors occur.
III. Backing up and restoring the extended segment of the Boot ROM image
1) Back up the extended segment of the Boot ROM image to Flash memory
Step 1: Enter Boot Menu, select <9> to enter Boot ROM Download Menu.
Step 2: In Boot ROM Download Menu, select <4> to copy the current extended
segment to Flash memory.
Backup Extended Segment, are you sure?[Y/N]
Enter <Y>. For a successful backup, the console screen displays:
Writing to FLASH.Please wait...####
Backuping Boot ROM program to FLASH successed!
Step 3: When Boot ROM Download Menu appears again, select <5> to and reboot the
router.
2) Restore the extended segment of the Boot ROM image from Flash memory
In case faults occur to the extended segment or the upgrade is done inadvertent, take
these steps to restore the extended segment of the Boot ROM image from Flash
memory to the Boot ROM:
Step 1: Enter Boot Menu, select <9> to enter Boot ROM Download Menu.
Step 2: In Boot ROM Download Menu, select <3> to restore the extended segment
from Flash memory.
Restore Extended Segment, are you sure?[Y/N]
Enter <Y>. The system starts restoring and if successful displays:
Writing to Boot ROM.Please wait...######
Restoring Boot ROM program successed!
Step 3: When Boot ROM Download Menu appears again, select <5> to exit and reboot
the router.
IV. Upgrading the application image through Ethernet
Upgrading the application image with NET is to download using an Ethernet interface.
In this approach, the router is TFTP or FTP Client and needs connecting to TFTP or
FTP Server using a fixed Ethernet interface.
3Com Corporation
6-8
Chapter 6 Router Maintenance