Upgrading Bootrom Through Serial Port; Modifying Serial Port Parameters - H3C MSR-20-21 ROUTER Installation Manual

Table 5-7 BootROM operation submenu
<1> Backup Full Boot ROM
<2> Restore Full Boot ROM
<3> Update Full Boot ROM With XModem
<4> Update Extended Boot ROM With XModem
<5> Update Basic Boot ROM With XModem
<6> Exit To Main Menu

Upgrading BootROM Through Serial Port

Use XModem to upgrade BootROM through serial port.

Modifying Serial Port Parameters

Sometimes, we need to change the serial baud rate to higher in order to save upgrade time, or to lower
to guarantee transmission reliability. This section depicts how to adjust serial baud rate.
Enter <2> in the main BootROM menu to enter the serial submenu. Then, enter <5>, and the system
prompts to change serial baud rate.
========================<BAUDRATE SET>=======================
|Note: Change The HyperTerminal's Baudrate Accordingly,
| Press 'Enter' to exit with things untouched.
|--------------------<Baudrate Available>-------------------|
| <1> 9600(Default)
| <2> 19200
| <3> 38400
| <4> 57600
| <5> 115200
| <6> Exit
=============================================================
Enter Your Choice(1-6):
Select a baud rate, <5> for 115200 bps for example. The following prompt appears:
Change the baudrate on PC side first!
Since the router serial baud rate is modified to 115200 bps, whereas the terminal baud rate remains to
be 9600 bps, they can not communicate with each other. Change the baud rate of your terminal to the
same as that for software download.
Perform the following operation:
Menu item
Backup full BootROM.
Restore full BootROM.
Upgrade full BootROM through XModem.
Update extended BootROM through XModem.
Update basic BootROM through XModem.
Exit to the main menu.
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5-9
Description