Procedure
Step 1 Download the FTD boot image (see Download Software, on page 2) to a TFTP server accessible by the
FTD on the Management interface.
For the ASA 5506-X, 5508-X, 5516-X, ISA 3000: You must use the Management 1/1 port to download the
image. For the other models, you can use any interface.
Step 2 Download the FTD system software install package (see Download Software, on page 2) to an HTTP or
FTP server accessible by the FTD on the Management interface.
Step 3 At the console port, reboot the Firepower Threat Defense device.
reboot
Example:
Enter yes to reboot.
Example:
> reboot
This command will reboot the system. Continue?
Please enter 'YES' or 'NO': yes
Step 4 Press Esc during the bootup when prompted to reach the ROMMON prompt.
Pay close attention to the monitor.
Example:
[...]
Booting from ROMMON
Cisco Systems ROMMON Version (2.1(9)8) #1: Wed Oct 26 17:14:40 PDT 2011
Platform ASA 5555-X with SW, 8 GE Data, 1 GE Mgmt
Use BREAK or ESC to interrupt boot.
Use SPACE to begin boot immediately.
Boot in 7 seconds.
Press Esc at this point.
If you see the following message, then you waited too long, and must reload the FTD again after it finishes
booting:
Launching BootLoader...
Boot configuration file contains 2 entries.
[...]
Step 5 Erase all disk(s) on the FTD. The internal flash is called disk0. If you have an external USB drive, it is disk1.
Example:
Example:
rommon #0> erase disk0:
Cisco ASA and Firepower Threat Defense Reimage Guide
24
Cisco ASA and Firepower Threat Defense Reimage Guide
Reimage the Firepower Threat Defense Device
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