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CS-1754 / CS-1758 User Manual
48
Firmware Upgrade Recovery
There are basically three conditions that call for firmware upgrade recovery:
When you invoke Firmware Upgrade Mode (see Preparation, page 43),
but decide not to proceed with the upgrade.
When the Mainboard firmware upgrade fails.
When the I/O firmware upgrade fails.
Note: If one of the cascaded switches fails to upgrade successfully, unplug it
from the installation and perform the recovery and upgrade operation
independently. After it has been successfully upgraded, plug it back into
the installation.
To perform a firmware upgrade recovery, do the following:
1. Unplug the switch's power adapter cable.
2. Slide the Firmware Upgrade Reset Switch (see page 7) to the Recover
position.
3. Use the Firmware Upgrade Cable (provided with this unit), to connect a
COM port on your computer with the Firmware Upgrade Port of the
switch.
4. Plug the switch's power adapter cable back in.
5. Repeat the upgrade procedure from Starting the Upgrade, page 44.
6. After the upgrade completes successfully, unplug the switch's power
adapter cable, once again.
7. Slide the Firmware Upgrade Recovery Switch back to the Normal
position.
8. Plug the switch's power adapter cable back in.
This completes the Firmware Upgrade Recovery operation, and your switch is
ready for use.
cs1754-1758.book Page 48 Friday, July 20, 2007 10:06 AM