Secure Computing SG300 User Manual page 316

Wait for the recovery procedure to complete and the SnapGear unit to finish
reprogramming.
Note
It may take up to 15 minutes for your SG to finish reprogramming. After it has finished it
reboots automatically with its old configuration intact. If it is uncontactable after
rebooting, hit the Reset/Erase button twice within 2 seconds to restore factory default
configuration, then follow the instructions in the chapter entitled Getting Started to begin
reconfiguration of your unit.
Recovery using a BOOTP server
Note
To recover your SnapGear unit using netflash.exe, two additional files are required.
These are the recovery image (.sgr) and final firmware image (.sgu) appropriate for your
unit. They are available in the \images directory of the SG CD that shipped with your
unit, or from SG customer support.
The following is a brief guide to performing a recovery boot when you are unable to
access either Netflash or a Windows PC on which to run it. More comprehensive
instructions are not given, as they vary depending on your operating system and server
software packages.
The recovery procedure involves network booting the unit using a BOOTP server with a
recovery image file (.sgr), then upgrading with a final firmware image file (.sgu) as per a
normal HTTP or TFTP flash upgrade to reprogram its flash to a usable state.
Note
To perform the recovery boot, you must have a firmware image for your SnapGear unit.
The firmware that shipped with your unit is located in the \firmware directory on the SG
CD. The latest firmware for your SnapGear unit can be obtained from customer support.
Firmware files have the format Model_Version_Date.sgu or Model_Version_Date_*.sgu.
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Appendix D – Recovering From a Failed Upgrade