Fortinet Document Library

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Table of Contents

Downgrading to previous firmware versions

Downgrading to previous firmware versions results in configuration loss on all models. Only the following settings are retained:

  • operation mode
  • interface IP/management IP
  • static route table
  • DNS settings
  • VDOM parameters/settings
  • admin user account
  • session helpers
  • system access profiles

If you have long VDOM names, you must shorten the long VDOM names (maximum 11 characters) before downgrading:

  1. Back up your configuration.
  2. In the backup configuration, replace all long VDOM names with its corresponding short VDOM name.

    For example, replace edit <long_vdom_name>/<short_name> with edit <short_name>/<short_name>.

  3. Restore the configuration.
  4. Perform the downgrade.

Downgrading to previous firmware versions

Downgrading to previous firmware versions results in configuration loss on all models. Only the following settings are retained:

  • operation mode
  • interface IP/management IP
  • static route table
  • DNS settings
  • VDOM parameters/settings
  • admin user account
  • session helpers
  • system access profiles

If you have long VDOM names, you must shorten the long VDOM names (maximum 11 characters) before downgrading:

  1. Back up your configuration.
  2. In the backup configuration, replace all long VDOM names with its corresponding short VDOM name.

    For example, replace edit <long_vdom_name>/<short_name> with edit <short_name>/<short_name>.

  3. Restore the configuration.
  4. Perform the downgrade.