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Upgrading Cisco 819 IOS

robert_mare1
Level 1
Level 1

All,

I seem to be having an issue with flashing the IOS of a Cisco 819.  To follow are the steps I have taken, along with the error:

copy tftp flash

name TFTP server, file name, dest filename etc.  All goes successful.

After successful copy from TFTP to the flash:

Save config

config t

boot system flash c800-universalk9-mz.SPA.155-3.M3.bin

reload

confirm

The router will then load to ROMMON

From the ROMMON command, I tried the same boot system flash command as above (boot system flash c800-universalk9-mz.SPA.155-3.M3.bin)

I then get the following error:

IOS Image Load Test
___________________
Digitally Signed Production Software
program load complete, entry point: 0x4000000, size: 0x4157390
Self decompressing the image : #################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################### [OK]
*** No sreloc section
================================================
== ===
== Netboot is not supported on this platform ===
== Please perform normal boot up ===
== Router is being reloaded. ===

Any insight or suggestions would be GREATLY APPRECIATED!

Thank you!

7 Replies 7

Leo Laohoo
Hall of Fame
Hall of Fame

1.  What is the exact model of the router? 

2.  Console into the router and reboot the router.  Post the entire boot-up process.  I want to see where it's failing. 

3.  What is the config-registry value of the router? 

4.  Compare the MD5 hash value of the IOS downloaded against the MD5 hash value found in the Cisco website. 

Hi Leo, thank you for the response!

  1. Router Model Number: 819-4G
  2. Attached (as you will see its booting into ROMMON first.
  3. Config Reg Value: 0x2100
  4. The MD5 Hash does in fact match.

Thanks again!

If you have a copy of your new IOS in your flash memory.

Use this:

router(config)#config-register 0x2142

router(config)#config-register 0x2142

This value means boot the IOS but disregard the startup-config file.  This config-register value is used to perform password recovery on the router.  The correct value should be 0x2102.

http://www.cisco.com/c/en/us/td/docs/routers/access/800/819/software/configuration/Guide/819_SCG/c_rommon.html

Pfft.  In the era of "tftpdnld" and USB ports, uploading the IOS using ROMmon is so "old fashion".  

Use the format flash: command. Looks like IOS won't load as the flash memory is corrupt.

Please rate if helpful.

Thank you. 

Config Reg Value: 0x2100

This value means "developer's mode".  Is someone playing a trick on you? 

The correct value should be 0x2102.

The MD5 Hash does in fact match.

If the MD5 hash value doesn't match with the MD5 hash value from the Cisco website this means the IOS file is corrupt.  Please download the IOS again. 

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