Справочник Пользователя для Fortinet 50B

Enter the firmware image filename and press Enter.

The TFTP server uploads the firmware image file to the FortiGate unit and 
messages similar to the following are displayed:
• 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]
or
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.

Change the internal interface address, if required. You can do this from the CLI 
using the following command:

config system interface

edit internal

set ip <address_ipv4mask>
set allowaccess {ping https ssh telnet http}

end

After changing the interface address, you can access the FortiGate unit from the 
web-based manager and restore the configuration.

For more information, see the 

If you are reverting to a previous firmware version (for example, reverting from 
FortiOS v3.0 to FortiOS v2.80), you might not be able to restore your previous 
configuration from the backup up configuration file.