Fortinet FortiGate 100 - Manual (Page 81)

System status Installing and using a backup firmware image
FortiGate-100 Installation and Configuration Guide
81
Switching to the backup firmware image
Use this procedure to switch your FortiGate unit to operating with a backup firmware
image that you have previous installed. When you switch the FortiGate unit to the
backup firmware image, the FortiGate unit operates using the configuration that was
saved with that firmware image.
If you install a new backup image from a reboot the configuration saved with this
firmware image is the factory default configuration. If you use the procedure
“Switching back to the default firmware image” on page 82 to switch to a backup
firmware image that was previously running as the default firmware image, the
configuration saved with this firmware image is restored.
1 Connect to the CLI using the null modem cable and FortiGate console port.
2 Enter the following command to restart the FortiGate unit:
execute reboot
As the FortiGate units starts, a series of system startup messages are displayed.
When one of the following messages appears:
Press any key to enter configuration menu.....
......
3 Immediately press any key to interrupt the system startup.
I
If you successfully interrupt the startup process, one of the following messages
appears:
[G]: Get firmware image from TFTP server.
[F]: Format boot device.
[B]: Boot with backup firmware and set as default.
[Q]: Quit menu and continue to boot with default firmware.
[H]: Display this list of options.
Enter G,F,B,Q,or H:
4 Type B to load the backup firmware image.
The FortiGate unit loads the backup firmware image and restarts. When the FortiGate
unit restarts it is running the backup firmware version and the configuration is set to
factory default.
Note: You only have 3 seconds to press any key. If you do not press any key soon enough, the
FortiGate unit reboots and you must log in and repeat the
execute reboot command.