Fortinet FortiGate Series Administration Manual page 156

Reverting to a previous firmware image
156
6 Type y.
The FortiGate unit uploads the firmware image file. After the file uploads, a message
similar to the following is displayed:
Get image from tftp server OK.
Check image OK.
This operation will downgrade the current firmware version!
Do you want to continue? (y/n)
7 Type y.
The FortiGate unit reverts to the old firmware version, resets the configuration to
factory defaults, and restarts. This process takes a few minutes.
After the FortiGate unit uploads the firmware, you need to reconfigure your IP address
since the FortiGate unit reverts to default settings, including its default IP address. See
your install guide for configuring IP addresses.
8 Reconnect to the CLI.
9 Enter the following command to confirm the firmware image installed successfully:
get system status
See "Restoring your configuration" on page 157
settings.
Managing firmware versions
to restore you previous configuration
FortiGate Version 4.0 MR1 Administration Guide
01-410-89802-20090903
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