FL MGUARD GT/GT
105656_en_05 PHOENIX CONTACT 189
8.8.4 Perform flashing the firmware/rescue procedure
Objective The entire mGuard firmware should be reloaded on the device.
– All configured settings are deleted. The device is set to the delivery state.
– As of mGuard firmware version 5.0.0, the licenses installed on the device are retained
after flashing the firmware. Therefore, they do not have to be installed again.
Possible reasons The administrator and root password have been lost.
Prerequisites
Action
See "Function selection by means of mode button (Smart mode)" for how to start the func-
tion type.
Upon success, the device launches the rescue system: It searches for a DHCP server via
the LAN interface in order to obtain an IP address.
The ACT, SPD, and FD LEDs are flashing.
The install.mpc83xx.p7s file is loaded from the TFTP server. It contains the electronically
signed control procedure for the installation process. Only files that are signed are exe-
cuted.
The control procedure deletes the current contents of the Flash memory and prepares for a
new firmware installation.
The jffs2.img.mpc83xx.p7s firmware file is downloaded from the TFTP server and written to
the Flash memory. This file contains the actual mGuard operating system and is signed
electronically. Only files signed by Phoenix Contact are accepted.
The process takes several minutes, during which the numbers on the 7-segment display
change constantly and the ACT, SPD and FD LEDs flash continuously. If 05 is shown in the
display and the LEDs simultaneously flash green, the flash process has been concluded.
Subsequently, restart the device. To do so, press the Mode button. The device is in the de-
livery state. Reconfigure the mGuard device (see “Establishing a local configuration con-
nection” on page 183).
NOTE: To flash the firmware, a DHCP and TFTP server or a BootP and TFTP server must
be installed on the locally connected computer.
Install the DHCP and TFTP server, if necessary (see “Installing the DHCP and TFTP serv-
er” on page 190).
NOTE: Installing a second DHCP server in a network could affect the configuration of the
entire network.
NOTE: Do not interrupt the power supply to the device during any stage of the flashing
procedure! Otherwise, the device could be damaged and may have to be reactivated by
the manufacturer.
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