Reverting to a previous firmware version - web-based manager
The following procedures revert the FortiGate unit to its factory default configuration and deletes any configuration settings. If you are reverting to a previous FortiOS version, you might not be able to restore the previous configuration from the backup configuration file.
|Always remember to back up your configuration before making any changes to the firmware.|
To revert to a previous firmware version
- Go to System > Dashboard > Status and locate the System Information widget.
- Beside Firmware Version, select Update.
- Type the path and filename of the firmware image file, or select Browse and locate the file.
- Select OK.
The FortiGate unit uploads the firmware image file, reverts to the old firmware version, resets the configuration, restarts, and displays the FortiGate login. This process takes a few minutes.