User`s guide

®
USER’S GUIDE Metered Rack PDU
6
Upgrade Firmware Through a Serial Connection
You can use a local computer that connects to the Rack PDU through the serial port on
the front panel of the unit.
1. Obtain the individual firmware modules (the AOS module and the application
module) from www.apc.com/tools/download.
2. Select a serial port at the local computer and disable any service that uses that
port.
3. Connect the provided serial cable (APC part number 940-0144A) to the
selected port and to the serial port at the Rack PDU.
4. Run a terminal program such as HyperTerminal, and configure the selected port
for 9600 bps, 8 data bits, no parity, 1 stop bit, and no flow control. Save the
changes.
5. Press
ENTER, repeatedly if necessary, to display the User Name prompt.
6. Enter the Administrator user name and password (apc by default for both).
7. From the Control Console menu, select System, then Tools, then File
Transfer, then XMODEM; type Yes at the prompt to continue.
8. Change the terminal program’s baud rate to match your selection, and press
ENTER. A higher baud rate causes faster upgrades.
9. From the terminal program’s menu, select the binary AOS file to transfer using
XMODEM-CRC. After the XMODEM transfer is complete, set the baud rate to
9600. The Rack PDU automatically restarts.
For a complete description of how to download a firmware upgrade
for your Rack PDU, see Upgrade Firmware. That section also
explains how to use network-based file transfer tools, which
complete a firmware upgrade more quickly than the XMODEM
protocol, which uses a serial connection.