Hello @michael Akins ,
If you check the link : https://www.cisco.com/c/en/us/products/collateral/security/asa-firepower-services/asa5525-5545-5555-series-3-yr-subscrip-eol.html
It has last date of software support.
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Last Date of Support:
App SW
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The last date to receive applicable service and support for the product as entitled by active service contracts or by warranty terms and conditions. After this date, all support services for the product are unavailable, and the product becomes obsolete.
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September 30, 2025
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Usually this is used as reference date for any last support of device, including TAC/security team support.
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You can also learn more about Secure Firewall (formerly known as NGFW) through our live Ask the Experts (ATXs) session. Check out Cisco Network Security ATXs Resources [https://community.cisco.com/t5/security-knowledge-base/cisco-network-security-ask-the-experts-resources/ta-p/4416493] to view the latest schedule for upcoming sessions, as well as the useful references, e.g. online guides, FAQs.
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Regards
Divya Jain
