3Com 3C13755-US - Router 5642 Installation Manual page 80

78 C 6: M
HAPTER AINTAINING THE
Backing up and
Restoring the Extended
Segment of Boot ROM
Program
R
OUTER
Please use 9600 bps.Press <ENTER> key to reboot the system.
Then restore the baudrate of the configuration terminal to 9600bps as per the
prompt (disconnection and re-dialing are also required here), and then the system
start up normally.
Upgrading the entire Boot ROM program
1 Enter Boot menu, select <7> to turn to Boot ROM operation menu.
2 Select <1> in the Boot ROM operation sub-menu to download the Boot ROM
program with XModem. The Router provides you with several speeds. The
subsequent operation steps are the same as those described in
CAUTION: If the all Boot ROM program fails during upgrade, it cannot be
restored on site. Therefore, only when necessary can you upgrade the whole Boot
ROM, besides, you must upgrade under the guide of technical support personnel.
Upgrading the extended
1 Enter Boot menu, select <7> to turn to Boot ROM operation menu.
2 Select <2> in the operation sub-menu to upgrade the extended segment of Boot
ROM program with XModem. The Router provides you with several speeds. The
subsequent operation steps are the same as those described earlier
Backup the extended segment of Boot ROM Program in FLASH
1 Enter Boot menu, select <7> to turn to Boot ROM operation menu.
2 Select <4> in the operation sub-menu to copy the current extended segment of
Boot ROM program into the FLASH, and then the following information will be
displayed in the terminal interface if the restoring operation is successful.
Writing to FLASH.Please wait...####
Backuping Boot ROM program to FLASH successed!
3 When the sub-menu appears again, select <5> to exit the Boot menu and proceed
to execute the router's main software.
Restore the extended segment of Boot ROM program from FLASH
In case that faults occur to the extended segment of the Boot ROM program that
is in use or you upgrade the extended segment wrongly, you can restore the
extended segment saved in FLASH into the Boot ROM by doing the following:
1 Enter Boot menu, select <7> to turn to Boot ROM operation menu.
2 Select <3> in the operation sub-menu to to restore Boot ROM from FLASH, and
then the following information will be displayed if the restoring operation is
successful.
Writing to Boot ROM.Please wait...######
Restoring Boot ROM program successed!
3 When the sub-menu appears again, select <5> to exit the Boot menu and proceed
to execute the router's main software.