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Performing a serial download 40
CAUTION: Do not power off the switch until the message: "Change your baud rate to 9600
bps and power cycle the switch," is displayed, otherwise, the switch will be inoperable.
10. Change the baud rate to 9600 and power off the switch, wait for a few seconds, and power on the
switch.
The switch boots with the new version of the boot code image that was just downloaded.
Serial upgrade of operating system firmware
procedure
To perform a serial upgrade of the switch operating system firmware image, usually named
pGbE2c_100.bin:
1. Using the null modem cable, connect the console port of the switch to the serial port of a PC that
supports XModem/1K XModem.
2. Start HyperTerminal (part of Microsoft Windows) or equivalent terminal emulation application
(depending on the computer operating system) and set the parameters for terminal emulation
console:
Parameter Value
Baud rate 9600
Data bits 8
Parity None
Stop bits 1
Flow control None
3. Power on the switch.
4. Hold down the Shift key and press the D key repeatedly during the Memory Test, until this message
appears: