troubleshooting Question

Cisco 870 Flash Upgrade

Avatar of paulbelsham
paulbelshamFlag for United Kingdom of Great Britain and Northern Ireland asked on
RoutersNetworkingSwitches / Hubs
9 Comments1 Solution2961 ViewsLast Modified:
Hi Experts
I have a Cisco 871W ISR and I purchased 32meg of flash to replace the standard 4meg chip that came with my router.  The router has 20meg onboard flash anyway so I knew that removing the additional 4meg chip would effectively cause the router to boot into ROMmon mode (which it did)  My problem is this.
I seem to be unable to boot into router boot mode  "Router (boot)" after changing the conf register to 0x2101
The router continually boots with the following message regardless how I set the conf register

System Bootstrap, Version 12.3(8r)YI4, RELEASE SOFTWARE
Technical Support:
Copyright (c) 2006 by cisco Systems, Inc.

C870 series (Board ID: 3-148) platform with 131072 Kbytes of main memory

No bootable image file: flash:/
Unable to open boot file

rommon 1 >

The contents on flash is as follows

rommon 1 > dir flash:
Directory of flash:/

4    -rwx  931840    <date>               es.tar
5    -rwx  1505280   <date>               common.tar
6    -rwx  1038      <date>               home.shtml
7    -rwx  112640    <date>               home.tar
8    -rwx  2242560   <date>               wlanui.tar
9    -rwx  660       <date>               vlan.dat

47583232 bytes available (4800512 bytes used)

as you can see there is no IOS image or cfg file

If I go through the motion of setting an ip address on the machine using the IP_ADDRESS command it accepts it but the TFTP transfer times out.  
Do I need to set the ip address on one of the switchport interfaces like I would expect to do in router boot mode, the 871 has a 4 port switch built into it and Im not exactly sure what ethernet port it would use (suffice to say I have tried them all)

any help would be much appreciated, I'm sure Im missing out something very simple

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