Navigate to Security > Firewalls > Next-Generation Firewalls (NGFW) > ASA 5500-X with FirePOWER Services > Model of ASA > Adaptive Security Appliance (ASA) Software Navigate to Security > Firewalls > Adaptive Security Appliace (ASA) > ASA Model > Software on Chassis > Adaptive Security Appliance (ASA) Software. Go to the downloads section of (requires Cisco login with valid support contract): The only time you need to do a stepped upgrade is when you’re upgrading from a very old version (pre 9.1) and want the config to be migrated for you. Because of this there usually isn’t a need to do a stepped upgrade. You download a whole new OS to be installed. There are no such things as patches or updates. The general suggestion is to run the latest version of ASA OS version that the ASA supports. To upgrade the OS of a Cisco ASA firewall follow these basic steps:
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