Restoring from a USB drive
The FortiGate firmware can be manually restored from a USB drive, or installed automatically from a USB drive after a reboot.
To restore the firmware from a USB drive:
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Copy the firmware file to the root directory on the USB drive.
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Connect the USB drive to the USB port of the FortiGate device.
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Connect to the FortiGate CLI using the RJ-45 to USB (or DB-9) or null modem cable.
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Enter the following command:
execute restore image usb <filename>
The FortiGate unit responds with the following message:
This operation will replace the current firmware version! Do you want to continue? (y/n)
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Type
y. The FortiGate unit restores the firmware and restarts. This process takes a few minutes. -
Update the antivirus and attack definitions:
execute update-now
To install firmware automatically from a USB drive:
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Go to System > Settings.
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In the Start Up Settings section, enable Detect firmware and enter the name of the firmware file.
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Copy the firmware file to the root directory on the USB drive.
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Connect the USB drive to the USB port of the FortiGate device.
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Reboot the FortiGate device.