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New Member

Install IOS on 3745 with no IOS

Hi all. I have a 3745 that I picked up and I got new memory and flash card for it. When I boot up, it has very few commands. I want to put the new IOS on it, how do I do it? There is no TFTP command. The only commands I see are:

rommon 6 > ?

alias               set and display aliases command

boot                boot up an external process

break               set/show/clear the breakpoint

confreg             configuration register utility

cont                continue executing a downloaded image

context             display the context of a loaded image

cookie              display contents of motherboard cookie PROM in hex

dev                 list the device table

dir                 list files in file system

dis                 disassemble instruction stream

dnld                serial download a program module

frame               print out a selected stack frame

help                monitor builtin command help

history             monitor command history

iomemdef            set IO mem to a default 25%

meminfo             main memory information

repeat              repeat a monitor command

reset               system reset

rommon-pref         Select ROMMON

set                 display the monitor variables

showmon             display currently selected ROM monitor

stack               produce a stack trace

sync                write monitor environment to NVRAM

sysret              print out info from last system return

unalias             unset an alias

unset               unset a monitor variable

xmodem     dnld     x/ymodem image download

I am connected to it via the console cable on COM3 using PUTTY.

How can I download the bin file to the unit over the serial connection?

I have this image:



Everyone's tags (3)
New Member

Install IOS on 3745 with no IOS

I figured an easy way to do. I found an old hyperterminal I was able to download. I just used it to connect and used xmodem dnld command to transfer it over the console cable.

Sure, it looks like it is going to take around 13 hours at 9600 baud, but it's better than nothing

New Member

Install IOS on 3745 with no IOS

Actually found how to increase the terminal speed, now it's only 2 hours!

Hall of Fame Super Gold

Re: Install IOS on 3745 with no IOS

Hi Mike,

Hmmmm ... 3745 right?

I got a simple solution for you but you need to pop the lid of the 3745. Are you game?

The 3745 has a CF flash INSIDE. Pop the lid and take the CF flash out. Load the IOS into the flash using a multi-card reader and you should be good. Alternatively, you can boot an IOS using the OUTSIDE using the command "boot disk0:IOS.bin" from ROMmon.

Sent from Cisco Technical Support Wii App

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