Core issue
To install a new PIX Firewall software image, the activation key cannot be upgraded by issuing the copy tftp flash command.
Resolution
For PIX Firewall software versions earlier than 6.2, the activation key upgrade requires access to monitor or boothelper mode (depending on the PIX Firewall model).
To resolve this issue, choose from one of these options:
- Perform the PIX Firewall upgrade from monitor mode.
- Upgrade to PIX Firewall Software version 6.2 or later and issue the activation-key activation key command.
For more information, refer to Upgrading Software for the Cisco Secure PIX Firewall and PIX Device Manager.