PIX Firewall displays a warning message if the configuration file (stored in Flash memory) is newer than the PIX Firewall software version currently being loaded. This message warns you of the possibility of unrecognized commands in the configuration file. For example, if you install version software when the current version is , the following message appears at startup: | CHAPTER 11 Changing Feature Licenses and System Software This chapter describes how to change upgrade or downgrade the feature license or software image on your Cisco PIX Firewall. It contains the following sections Upgrading Your License by Entering a New Activation Key Using HTTP to Copy Software and Configurations Getting a Console Terminal Downloading the Current Software Installing the Software Downgrading to a Previous Software Version Upgrading Failover Systems from a Previous Version TFTP Download Error Codes PIX Firewall displays a warning message if the configuration file stored in Flash memory is newer than the PIX Firewall software version currently being loaded. This message warns you of the possibility of unrecognized commands in the configuration file. For example if you install version software when the current version is the following message appears at startup Configuration Compatibility Warning The config is from version 1 . but the image is version 1 . In the message config is the version in Flash memory and image is the version you are installing. Caution Before upgrading from a previous version save your configuration and write down your activation key. Cisco PIX Firewall and VPN Configuration Guide I 78-13943-01 11-1 Chapter 11 Changing Feature Licenses and System Software Upgrading Your License by Entering a New Activation Key Upgrading Your License by Entering a New Activation Key PIX Firewall version introduces a method of upgrading or changing the license for your PIX Firewall remotely without entering monitor mode and without replacing the software image. With this new feature you can enter a new activation key for a different PIX Firewall license from the command-line interface CLI . Entering a New Activation Key Before entering the activation key ensure that the image in Flash and the running image are the same. You can do this by rebooting the PIX Firewall before entering the new activation key. Note You must .
