ASA 5520 - Upgrade OS

[nghiemchung]

Dear Guy,

My customer have two ASA 5520 appliances. They have purchased since 2012, it's expired and end of sale. They want to re-image and protect for new zone (only use Firewall function). is it possible? and what's image good version for them?

Tks all so much !

[Kanwaljeet Singh · Accepted solution]

Hi,

You can go to 9.1 which is the latest and last image available for 5520.

https://software.cisco.com/download/release.html?mdfid=279916878&flowid=4374&softwareid=280775065&release=9.1.7%20Interim&relind=AVAILABLE&rellifecycle=&reltype=latest

All you need to do is to upload an appropriate image in the flash and boot with it.

Pasting link for upgrade procedure.

http://www.cisco.com/c/en/us/support/docs/security/asa-5500-x-series-next-generation-firewalls/200142-ASA-9-x-Upgrade-a-Software-Image-using.html

Also, please go through the release notes of the version you would be upgrading to. Sometimes you need to upgrade to an intermediate version before upgrading to the final one. It depends on what is the current version on ASA.

Regards,

Kanwal

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