Serial Recovery

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Revision as of 14:43, 30 October 2010

Routers that have a serial port can often be recovered by using a serial adapter. This is an alternative to Jtag.

Serial ports are normally a four or five pins on the router motherboard. Usually, you have to solder to pads or remove solder from the holes and install a four or five pin header.

You connect to the router with the programs hyperterminal or putty.

Power cycle the router and while it is booting hit control C quickly. You should get a CFE>


The most common command you will use is the "nvram erase" command.

To flash the firmware

stop the boot with ctrl-c Enter this command "flash -ctheader : flash1.trx