Cisco Cisco Email Security Appliance C170

See the following sections before upgrading: 

Hardware appliances: This release is supported only on certain models. See 

. 

Virtual appliances: To ensure that you obtain all of the benefits of this release, see 

Cluster configurations (centralized management): Take action before you upgrade your cluster. 
See 

. 

To ensure a successful upgrade: You must complete some steps before you start the upgrade 
process. For details on these prerequisites, see 

.

You can upgrade to release 9.1.2-041 from the following versions:

8.5.6-106

9.1.0-032

9.1.2-028

9.1.2-036

If you plan to upgrade to AsyncOS 9.1.2-041, review the 

Read through and consider the installation and upgrade impacts listed in this section. 

When you upgrade AsyncOS for Email from the web interface or Command Line Interface (CLI), the 
configuration is saved to file in the /configuration/upgrade directory. You can access the upgrade 
directory using an FTP client. Each configuration file name is appended with the version number, and 
passwords in the configuration file are masked so they are not human readable.

You must be logged in as the admin to upgrade. Also, you must reboot the appliance after upgrading.

All virtual appliance models. 

The following hardware models: 

C190, C390, C690

C380 or C680 

C170 

Some C370, C370D, C670 or X1070 appliances