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Cisco 1711 Warning: Cookie information is corrupt and Bad checksum on cooki

I have Cisco 1711 router. The router went to romon mode.when i am trying to upgrade the IOS via TFTPDNLD and XMODEM, i am getting below error.

Warning: Cookie information is corrupt

Bad checksum on cookie structure, resorting to backup copy

  • WAN Routing and Switching
2 REPLIES
Hall of Fame Super Silver

Re: Cisco 1711 Warning: Cookie information is corrupt and Bad ch

Hello Sigeesh,

have you been able to install an IOS image on the device?

Hope to help

Giuseppe

New Member

Re: Cisco 1711 Warning: Cookie information is corrupt and Bad ch

Hello Giuseppe

I have tried using TDTPDNLD and XMODEM, but getting the same error at the time of upgrading.

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