Offline Security Device Upgrade Guide: Download Links for Major Vendors (Continuously Updated)

Translation Notice

This article was originally written in Chinese and translated into English with the assistance of AI. The translation has been reviewed and edited for clarity, accuracy, and readability. Please refer to the original source where necessary, especially for technical terms, commands, configuration details, and proper nouns.

In day-to-day operations, many security devices deployed on internal or isolated networks—such as firewalls, intrusion-detection systems, and DDoS protection systems—cannot connect directly to update signatures or system patches. They must be updated by downloading and importing offline packages manually. Vendor download pages are often scattered, difficult to find, and sometimes require account verification.
This article collects offline upgrade links from major security vendors in one place. It will be updated continuously; bookmarks, shares, and additions are welcome.

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