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I have a TZ300 with SonicOS Enhanced 184.108.40.206-23n. What is the latest version I can upgrade to, how do I purchase it (if it's not free), and how do I install it.
Hello @FreddyBZ - You can upgrade to the currently available Maintenance Release Firmware version 220.127.116.11.
Please find the documents that you can reference for performing the upgrades. Note: Before doing a firmware upgrade, be sure to please save a copy of the Settings File and Technical Support Report for your reference.
How can I save a backup settings file from a SonicWall firewall?
How can I download the latest SonicOS firmware version for your SonicWall?
How can I upgrade SonicOS Firmware?