NetModule NB3700, User Manual

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NB3700 User Manual 3.8
5.1.2. Recovery
Following actions might be taken in case the router has been misconfigured and cannot
be reached anymore:
1. Factory Reset: You can initiate a reset back to factory settings via the Web Man-
ager, by running the command
factory-reset
or by pressing the reset button.
The latter would require a slim needle or paper clip which must be inserted into
the hole
to the left of the LEDs . The button must be hold pressed for up to
5 seconds until all LEDs flash up.
2. Serial Console Login: It is also possible to log into the system via the serial port.
This would require a terminal emulator (such as PuTTY or HyperTerminal) and an
RS232 connection (115200 8N1) attached to the serial port of your local computer.
You will also see the kernel messages at bootup there.
3. Recovery Image: In severe cases we can provide a recovery image on demand which
can be loaded into RAM via TFTP and executed. It offers a minimal system image
for running a software update or doing other modifications. You will be provided
with two files, recovery-image and recovery-dtb, which must be placed in the root
directory of a TFTP server (connected via LAN1 and address 192.168.1.254). The
recovery image can be launched from the boot-loader using a serial connection. You
will have to stop the boot process by pressing
s
and enter the bootloader. You
can then issue
run recovery
to load the image and start the system which can be
accessed via HTTP/SSH/Telnet and its IP address
192.168.1.1
afterwards. This
procedure can be also initiated by holding the factory reset button longer than 15
seconds.
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