System status Test a new firmware image before installing it
FortiGate-100 Installation and Configuration Guide 77
11 Enter the firmware image file name and press Enter.
The TFTP server uploads the firmware image file to the FortiGate unit and messages
similar to the following appear.
• FortiGate unit running v2.x BIOS
Do You Want To Save The Image? [Y/n]
Type Y.
• FortiGate unit running v3.x BIOS
Save as Default firmware/Run image without saving:[D/R]
Save as Default firmware/Backup firmware/Run image without
saving:[D/B/R]
Type D .
The FortiGate unit installs the new firmware image and restarts. The installation might
take a few minutes to complete.
Restoring your previous configuration
You can then restore your previous configuration. Begin by changing the interface
addresses if required. You can do this from the CLI using the command:
set system interface
After changing the interface addresses, you can access the FortiGate unit from the
web-based manager and restore your configuration.
To restore your FortiGate unit configuration, see “Restoring system settings” on
page 84. To restore NIDS user defined signatures, see the FortiGate NIDS Guide. To
restore web content and email filtering lists, see the FortiGate Content Protection
Guide.
If you are reverting to a previous firmware version (for example, reverting from
FortiOS v2.50 to FortiOS v2.36) you may not be able to restore your previous
configuration from the backup up configuration file.
12 Update the virus and attack definitions to the most recent version, see “Manually
updating antivirus and attack definitions” on page 95.
Test a new firmware image before installing it
You can test a new firmware image by installing the firmware image from a system
reboot and saving it to system memory. After completing this procedure the FortiGate
unit operates using the new firmware image with the current configuration. This new
firmware image is not permanently installed. The next time the FortiGate unit restarts
it will be operating with the originally installed firmware image using the current
configuration. If the new firmware image operates successfully, you can install it
permanently using the procedure “Upgrade to a new firmware version” on page71.
To run this procedure you:
• access the CLI by connecting to the FortiGate console port using a null-modem
cable,
• install a TFTP server that you can connect to from the FortiGate internal interface.
The TFTP server should be on the same subnet as the internal interface.