invalid boot magic number

Hi,

when i was trying to upgrade the 1750 router with 12.3 IOS, in the
middle of the upgrade
it' was failed.

after rebooting the router i am getting "in valid boot magic number"

can anyone help me to recover the router.

 

I think that this means that the image is corrupt.

You can usually recover from the rommon with either
a tftp boot, tftp download or an xmodem download.
Not all of these may be avilable on your router.

You can search the cisco site for more similar documents.


http://www.cisco.com/en/US/products/hw/routers/ps259/products_tech_note09186a008015bfac.shtml
Describes xmodem - this seems to be the best and most fully
described. Maybe you should go for this one.

http://www.cisco.com/en/US/products/hw/routers/ps259/products_tech_note09186a008015bf9e.shtml
tftpdnld

Your image may be corrupt. If you ftp copy an image you
MUST use binary mode.

 

I know this thread is two years old, but I recently had this problem when I purchased a 7204 off eBay and was unable to find a solution via a web search. I'm posting the link to my solution for the "device does not contain a valid magic number" error since I'm sure I wasn't the only one looking for an answer to this question. I hope I helped someone

http://www.configs.com/tech-tips/device-does-not-contain-a-valid-magic-number-error/