Cisco Cisco IPS 4255 Sensor

You cannot uninstall 7.3(5)E4. To revert to a previous version, you must reimage the sensor using 
the appropriate system image file. All configuration settings are lost. 

To use automatic signature upgrades in 7.3(5), you must accept a EULA at the link that is emailed 
to the registered Cisco account used to configure the automatic upgrade service.

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 

.

For the procedure for installing the ASA 5500-X IPS SSP system image, see 

.

For the procedure for installing the ASA 5585-X IPS SSP system image, see 

Use the upgrade source-url command to apply service pack, signature update, engine update, minor 
version, major version, or recovery partition file upgrades. 

The following options apply:

source-url—Specifies the location of the source file to be copied:

ftp:—Source URL for an FTP network server. The syntax for this prefix is:

ftp://[[username@]location][/relativeDirectory]/filename

ftp://[[username@]location][//absoluteDirectory]/filename

You are prompted for a password.

scp:—Source URL for the SCP network server. The syntax for this prefix is:

scp://[[username@]location][/relativeDirectory]/filename

scp://[[username@]location][//absoluteDirectory]/filename

You are prompted for a password. You must add the remote host to the SSH known hosts 
list.

http:—Source URL for the web server. The syntax for this prefix is:

http://[[username@]location][/directory]/filename

The directory specification should be an absolute path to the desired file.