Other Upgrade Limitations
2100 Series Devices
Security Cloud Control can upgrade Firepower 2100 series devices only if they are running appliance mode.
- 
                    Firepower Threat Defense devices are always in appliance mode. 
- 
                    ASA devices are appliance mode by default. 
To confirm that your Firepower 2100 running ASA is in appliance mode:
Procedure
| Step 1 | Connect your management computer to the console port or connect to the device using SSH. | 
| Step 2 | Enter global configuration mode. | 
| Step 3 | Run the show fxos mode command,  | 
What to do next
See the "Cisco Firepower 2100 Getting Started Guide" for a more detailed discussion of these commands.