Cisco ASA 5525-X Open SSH Upgrade

[michaelgebreegziabher21778]

The current version of my Cisco Firewall is SSH-2.0-OpenSSH_7.5. Following the recommendation from our security team, I would like to upgrade it to version 8.8 or a later version. Can you please guide me on how to perform the upgrade?

[balaji.bandi]

what ASA code running, show version help herre

[michaelgebreegziabher21778]

show version

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Model : Cisco ASA5525-X Threat Defense (75) Version 6.6.7 (Build 223)

UUID : 

Rules update version : 2024-04-17-002-vrt

vdb version : 353

[Marvin Rhoads]

Your ASA running FTD image is already past end of support and cannot be upgraded past version 6.6.x.

Reference Table 25 here for confirmation: https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/compatibility/threat-defense-compatibility.html