Cisco Cisco IPS 4255 Sensor

Follow the instructions in the Readme or the Release Notes to install the update.

This section describes how to upgrade the IPS 4345, IPS 4360, IPS 4510, IPS 4520, and IPS 4520-XL, 
and contains the following topics:

Pay attention to the following upgrade notes and caveats when upgrading to IPS 7.3(1)E4:

You cannot upgrade to 7.3(1)E4 if the sensor license was generated for 6.0.x versions and earlier. 
The upgrade fails and the following message is displayed:

Error: execUpgradeSoftware : This license is a IPS version 6.0 or earlier license 

which is not compatible with platforms running 7.1.X IPS Versions. Please install a 

IPS version 6.1 or later license type. Refer to 7.3.X IPS version README or IPS 

documents for the details of generating a new license. 

Anomaly detection has been disabled by default. If you did not configure the operation mode 
manually before the upgrade, it defaults to inactive after you upgrade to IPS 7.3(1)E4. If you 
configured the operation mode to detect, learn, or inactive, the tuned value is preserved after the 
upgrade. 

You must have a valid maintenance contract per sensor to download software upgrades from 
Cisco.com.

You must be running the following versions to upgrade the following platforms to IPS 7.3(1)E4: 

For the IPS 4300 series sensors, you must be running IPS 7.1(3)E4 or later

For the IPS 4500 series sensors, you must be running IPS 7.1(4)E4 or later

Use the 4520 files to upgrade the IPS 4520-XL.

This service pack automatically reboots the sensor to apply the changes. During reboot, inline 
network traffic is disrupted. 

You cannot uninstall 7.3(1)E4. To revert to a previous version, you must reimage the sensor using 
the appropriate system image file. All configuration settings are lost. 

For the procedure to download software from Cisco.com, see 

.

For the procedure for using the upgrade command to upgrade the sensor, see 

.

For the procedure for installing the IPS 4345 and IPS 4560 system images, see 

For the procedure installing the IPS 4510 and IPS 4520 system images, see 

.