Secure Computing SG300 User Manual page 294

There are two primary methods available for performing a flash upgrade, Netflash and
Flash upgrade via HTTP. Remote upgrades may also be performed using TFTP if you
have a TFTP server at the remote site, see Flash upgrade via TFTP.
During the upgrade, the front panel LEDs on the SnapGear unit flash in an in-and-out
pattern. The SnapGear unit retains its configuration information with the new firmware.
Warning
If the flash upgrade is interrupted (e.g. power down), the SnapGear unit stops functioning
and becomes unusable until its flash is reprogrammed at the factory or a recovery boot is
performed. User care is advised.
For instructions on performing a recovery boot, refer to Appendix D, Recovering From a
Failed Upgrade.
Netflash
The first is to download the netflash.exe for the appropriate model and version to which
you are upgrading. This is a Windows program that automates the upgrade procedure.
Be sure to read the release notes before attempting the upgrade.
Flash upgrade via HTTP
The second is to download the binary image file (.sgu). Contact SG technical support for
instructions on obtaining this file.
Select Advanced from the System section of the main menu and click the Flash
Upgrade tab. Click Browse to locate the .sgu file on your local PC and click Upgrade.
Enter Extra Parameters only at the request of Secure Computing technical support staff.
Flash upgrade via TFTP
An alternative method is to install and configure a TFTP server. The majority of Linux
distributions include a TFTP server, Windows users can download one from:
http://www.snapgear.com/ftp/tools/tftpd32j.zip
System
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