Configuration manual
10. Software Upgrade
107
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During the upgrade process, the device must not be powered off or
restarted. Otherwise, the system may fail to start, or the bootloader file of
the boards may be damaged.
Upgrade the bootloader Program via the Console Port
Ensure that the HyperTerminal can access the device through the Console port. Enter the
bootloader mode, adjust the baud rate, and perform the upgrade through the ymodem of the
HyperTerminal.
For details of the commands, refer to the sections related to "bootloader" in the command
manual.
Table 10-5 Upgrading the
bootloader
program via the console port
Step
Command
Description
Set the HyperTerminal.
None
Mandatory.
Run
the
HyperTerminal
program,
select
the
corresponding serial port (such
as
com1)
and
set
its
properties. Set baud rate to
9600 bps, soft flow control, 8
data bits, no parity check, and
1 stop bit.
Enter the bootloader
mode.
None
Mandatory.
When the device restarts,
press Ctrl + C to enter the
bootloader mode.
Modify the baud rate of
the Console port and
HyperTerminal
to
improve the upgrade
speed.
srate { speed }
Optional.
Modify the baud rate of the
device Console port to 115200
bps. Then, disconnect the
HyperTerminal, and modify
the
baud
rate
of
the
HyperTerminal to 115200 bps,
and
then
connect
the
HyperTerminal again.
