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Cisco 1941 Router Upgradation

Unanswered Question
Apr 3rd, 2012
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Hi Experts,


While upgrading Cisco 1941 router with latest IOS version, my router gone to the rommon mode.


Below is the out put of in the rommonitormode.


rommon 47 > dir flash:

program load complete, entry point: 0x80803000, size: 0x1b340

Directory of flash:



2      65409024  -rw-     c1900-universalk9-mz.SPA.151-3.T1.bin

11188    2903      -rw-     cpconfig-19xx.cfg

11189    2941440   -rw-     cpexpress.tar

11908    1038      -rw-     home.shtml

11909    115712    -rw-     home.tar

11938    1697952   -rw-     securedesktop-ios-3.1.1.45-k9.pkg

12353    415956    -rw-     sslclient-win-1.1.4.176.pkg

17238    65409024  -rw-     c1900-universalk9-mz.SPA.152-3.T.bin

rommon 48 >





rommon 48 > boot flash:c1900-universalk9-mz.SPA.152-3.T.bin 

program load complete, entry point: 0x80803000, size: 0x1b340

loadprog: error - on load of image from file system with monlib

Image size (65409024) does not match the expected size (66415436)

boot: cannot load "flash:c1900-universalk9-mz.SPA.152-3.T.bin"

rommon 49 >



In flash i have IOS, while using boot command above error is showing. Please help to solve this issue.


Regards,

Janardhan

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Neeraj Arora Tue, 04/03/2012 - 05:14
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  • Silver, 250 points or more

Hi Janardhan ,


It seems that the IOS file (15.2.3T) that you are trying to load has gone bad/corrupt. I would suggest you try to boot with the other IOS image that you have in flash and copy the latest IOS file again.


Use the command:

rommon 48 > boot flash:c1900-universalk9-mz.SPA.151-3.T1.bin


After the router boots up with this old IOS, download the latest IOS or the same IOS 15.2.3T again and copy it to the flash following the IOS upgrade procedure.


Try this and provide an update if this helps


Neeraj

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