ASA IOS Upgrade

[sly007]

Hello Experts,

I have ASA 5520 with IOS image version 7.0(7).

Can i do a straight upgrade to image version 8.4(5)?    

Thank you.             

[Collin Clark · Accepted solution]

You can but be aware that after 8.2 the firewall configuration is object based. There are significant changes that you should be aware of before upgrading. I've seen some upgrades go wrong and a complete rebuild of the config was necessary.

http://www.cisco.com/en/US/docs/security/asa/asa83/upgrading/migrating.html
      

[sly007]

Hi Collin,

Thank you very much for this contribution. I really do appreciate it.

Thanks