Zero Downtime Upgrade ASA5520 - 8.0(3) to 8.2(1)

[tim.davies]

Hi there

I have an active/standby configuration is it possible to upgrade the ASA5520 with zero downtime from 8.0(3) to 8.2(1)? and ASDM from 6.0(3) to 6.2.

Thanks

Tim

[andrew.prince]

Tim,

I do not think this is possible, as even with statefull failover configured, once 1 device is reloaded - it will reload on a different versions. You cannot have statefull/failover working on 2 units on seperate versions

HTH>

[atrion-dmcnamara · Accepted solution]

You can upgrade the ASDM with zero downtime, but you cannot upgrade the ASA code itself from 8.0(3) to 8.2(1).

http://www.cisco.com/en/US/docs/security/asa/asa80/configuration/guide/mswlicfg.html#wp1053398

Per the article above, you would need to upgrade to 8.0(4) first, and then to 8.2(1).