If you are upgrading from a previous version, you need to use TFTP from the firewall to copy the PDM image to your firewall. For instructions on how to do this, refer to "Using a TFTP Server".
Confirm the following before you install PDM:
Verify that all system requirements have been met. See the requirements listed in "Overview." For example, the PIX Firewall unit must be running PIX Firewall software Version 6.3 and have a DES, 3DES, or AES activation key to use PDM Version 3.0.
Confirm that you are running PIX Firewall software Version 6.3. (If you have command line access to your PIX Firewall, you can use the CLI show version command to display the version currently running on your PIX Firewall.)
If you are not running PIX Firewall software Version 6.3, see the instructions for installing PIX Firewall software in the Cisco PIX Firewall and VPN Configuration Guide. (After installing a PIX Firewall image, reboot your PIX Firewall to begin running the new image on the PIX Firewall.)
If your PIX Firewall is new, it shipped with PIX Firewall software Version 6.3, and PDM Version 3.0.
Verify that you have a TFTP or FTP server installed. See "Using a TFTP Server." to install a TFTP server.