Firepower 1120 FTD downgrade to Cisco ASA image

[victor-hugo]

I want to downgrade FTD v6.4.0
Boot Loader version: 1.0.18 (ROMMON)
System version: 2.6(1.133)
Service Manager version: 2.6(1.133)
USB does not work. I've try few USB 2.0 1 GB pendrives.
I've try connecting with tftp server like in yt video: 'How to convert Cisco FTD to ASA code' - 'LookingPoint, Inc' channel. There is a ROMMON version 1.1.8 with command: erase disk0 - I do not have that/cannot execute.
Do you have any idea how to prossed?

[MHM Cisco World]

do you have legal asa image for firepower ?

MHM

[victor-hugo]

yes, I have Cisco ASA image from official website: https://software.cisco.com/download/home 

[Marvin Rhoads · Accepted solution]

Have you tried following the official Cisco procedure below?

https://www.cisco.com/c/en/us/td/docs/security/firepower/quick_start/reimage/asa-ftd-reimage.html#task_vhy_5kc_sgb

[victor-hugo]

Hello Marvin,

thanks a lot for your help. I can confirm my ASA it's working.

Best regards