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Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2
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Chapter21 Upgrading, Downgrading, and Installing System Images
Upgrades, Downgrades, and System Images
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All user configuration settings are lost when you install the system image. Before trying to recover
the sensor by installing the system image, try to recover by using the recover application-partition
command or by selecting the recovery partition during sensor bootup.
For More Information
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For the procedure for accessing downloads on Cisco.com, see Obtaining Cisco IPS Software,
page 20-1.
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For the procedure for using the upgrade command to upgrade the sensor, see Upgrading the Sensor,
page 21-3.
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For the procedure for configuring automatic upgrades on the sensor, see Configuring Auto matic
Upgrades, page 21-8.
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For the procedure for using the recover comm and, see Recovering the Application Partition,
page 21-13.
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For the procedure for installing the IPS4345 and IPS 4360 system image, see Installing the System
Image for the IPS 4345 and IPS 4360, page 21-16.
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For the procedure for installing the IPS4510 and IPS 4520 system image, see Installing the System
Image for the IPS 4510 and IPS 4520, page 21-19.
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For the procedure for installing the ASA 5500-X IPS SSP system image, see Installing the System
Image for the ASA 5500-X IPS SSP, page 21-22.
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For the procedure for installing the ASA 5585-X IPS SSP system image, see Installing the System
Image for the ASA 5585-X IPS SSP, page 21-23.
Upgrades, Downgrades, and System Images
Caution
You cannot use the downgrade command to revert to a previous major or minor version, for example,
from Cisco IPS 7.2 to 7.1. You can only use the downgrade command to downgrade from the latest
signature update or signature engine update. To revert to 7.1, you must reimage the sensor.
Note
After you upgrade any IPS software on your sensor, you must restart the IDM to see the latest software
features.
You can upgrade and downgrade the software on the sensor. Upgrading applies a service pack, signature
update, signature engine update, minor version, major version, or recovery partition file. Downgrading
removes the last applied service pack or signature update from the sensor.
You can recover the application partition image on your sensor if it becomes unusable. Using the recover
command lets you retain your host settings while other settings revert to the factory defaults.
To install a new system image on the sensor, use ROMMON, the bootloader file, or the maintenance
partition depending on which platform you have. When you install a new system image on your sensor,
all accounts are removed and the default cisco account is reset to use the default password cisco. After
installing the system image, you must initialize the sensor again.
After you reimage and initialize your sensor, upgrade your sensor with the most recent service pack,
signature update, signature engine update, minor update, major update, and recovery partition files.