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New Member

Cisco 3640 Router IOS Recovery

Hello all,

I upgraded a 3640 router IOS, but when I rebooted the router, it could not load the IOS and goes to Rom Monitor command. I already saved the old IOS on the TFTP server. Is there some one who knows how to restore the old IOS from the TFTP server to the flash?Thanks.

  • LAN Switching and Routing
2 REPLIES
Cisco Employee

Re: Cisco 3640 Router IOS Recovery

I dont know which rommon version you have.3600's dont support " TFTPDNLD " command to boot the router from TFTP when you are in rommon. Check if you have that command in your rommon version:

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

The only option that you are left with is Xmodem file to the router.

http://www.cisco.com/en/US/products/hw/routers/ps259/products_tech_note09186a008015bfac.shtml

HTH,

-amit singh

New Member

Re: Cisco 3640 Router IOS Recovery

Thank you very much Amit for your help, I restored the old IOS using Xmodem.

Mohsen

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