Cisco Cisco IPS 4255 Sensor

The BIOS on Cisco IDS/IPS sensors is specific to Cisco IDS/IPS sensors and must only be upgraded 
under instructions from Cisco with BIOS files obtained from the Cisco website. Installing a non-Cisco 
or third-party BIOS on Cisco IDS/IPS sensors voids the warranty. For more information on how to obtain 
instructions and BIOS files from the Cisco website, see 

The 6.0(4a)E1E1 service pack upgrade file was repackaged to address an installation issue 
(CSCs031217).

This repackaged upgrade file replaces the 6.0(4a)E1E1 service pack. Do not install 6.0(4a)E1 over an 
existing 6.0(4a)E1E1 or higher version sensor. Doing may render your sensor inoperable, which may 
require you to recover the application partition. 

You cannot uninstall the 6.0(4a)E1 service pack. You must reimage your sensor using a system image 
file. All configuration settings will be lost.

For the procedure for installing system image files, refer to 

For the procedure for installing recovery image files, refer to 

.

The following files are part of Cisco IPS 6.0(4a)E1:

Service Pack Files

IPS-K9-6.0-4a-E1.pkg 

IPS-CS-MGR-K9-6.0-4a-E1.zip

System Image Files

IPS-4215-K9-sys-1.1-a-6.0-4a-E1.img 

IPS-4240-K9-sys-1.1-a-6.0-4a-E1.img 

IPS-4255-K9-sys-1.1-a-6.0-4a-E1.img 

IPS-4260-K9-sys-1.1-a-6.0-4a-E1.img 

IPS-4270_20-K9-sys-1.1-a-6.0-4a-E1.img 

IPS-SSM_10-K9-sys-1.1-a-6.0-4a-E1.img

IPS-SSM_20-K9-sys-1.1-a-6.0-4a-E1.img 

IPS-SSM_40-K9-sys-1.1-a-6.0-4a-E1.img 

IPS-AIM-K9-sys-1.1-a-6.0-4a-E1.img 

IPS-NM_CIDS-K9-sys-1.1-a-6.0-4a-E1.img 

WS-IDSM2-K9-sys-1.1-a-6.0-4a-E1.bin.gz