Tech Support > Computer Hardware > Routers > Re: new IOS invalid checksum (broken flashcard?)
Re: new IOS invalid checksum (broken flashcard?)
Posted by gglggl on December 23rd, 2004



Hansang Bae wrote:
I've had this problem and here's what works for me :

Each time you download a *.bin, use md5sum to check the value listed on
Cisco's website.

I discovered that in every case, the first time I downloaded a *.bin,
the md5 check was different, BUT on the 2nd time it was correct and
installed fine.

md5sum is available for Windows from various places (use Google) or if
you use Linux or Cygwin (Linux for Windows) it comes bundled.

Not sure what the root cause is but this approach worked for me !
cheers,

ggl



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