Downgrading to Previous Versions of Firmware

Downgrading to previous versions of firmware

FortiAnalyzer does not provide a full downgrade path. You can downgrade to a previous firmware release via the GUI or CLI, but doing so results in configuration loss. A system reset is required after the firmware downgrading process has completed. To reset the system, use the following CLI commands via a console port connection:

execute reset all-settings
execute format {disk | disk-ext4}

This entry was posted in FortiAnalyzer on by .

About Mike

Michael Pruett, CISSP has a wide range of cyber-security and network engineering expertise. The plethora of vendors that resell hardware but have zero engineering knowledge resulting in the wrong hardware or configuration being deployed is a major pet peeve of Michael's. This site was started in an effort to spread information while providing the option of quality consulting services at a much lower price than Fortinet Professional Services. Owns PacketLlama.Com (Fortinet Hardware Sales) and Office Of The CISO, LLC (Cybersecurity consulting firm).

One thought on “Downgrading to Previous Versions of Firmware

  1. adil

    Hi, I have Fortianalyzer 1000E. i recently upgraded to 6.4.1 and now i am facing issues that it lose network connectivity though it is power on. Then I have to switch it off and on to make it available on network. I dont have fortinet support. I heard that it was bug in 6.4.0 but i have 6.4.1. Please help me as i am in hot water in department. I dont want to lose any data.


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