2960 Bad Image unable to Xmodem

Larry Craig · ‎10-23-2015

Hello,

I have a series of 15 switches I was attempting to block point to the MR release of c2960-lanbasek9-mz.122-55.SE10.bin

I have a Cisco 2960-24PC-L switch that would not boot. It is stuck in a boot loop with the following error:

: Unexpected exception to CPUvector 0, PC = 628378
-Traceback= 628378

I attempted the process found here:

Two problems, first is the the load_helper command does not work. It errors with "unknown cmd: load_helper"

Second attempting to use the command "copy xmodem: flash:...." fails because it tells me there is no xmodem

which is probably because of the failed "load_helper" issue. Lastly if I attempt to initiate the file transfer from my

laptop it eventually fails telling me that the remote end is not receiving, even though the screen says the following:

switch:
Transferring , errors 11...Press Ctrl+C to cancel.

But it eventually fails.

Please help me solve this problem. Thanks

Leo Laohoo · ‎10-23-2015

Post the entire bootup process. I want to see the error messages.

Larry Craig · ‎10-29-2015

Sorry, I have solved my problem. I still don't know why the image was corrupt. But I was able to push via xmodem another version.

peng · ‎10-31-2015

Hi Larry,

What did you do to make this work, because I am having the same problem with securecrt

I get the error message "Xmodem operation was canceled by remote peer"

I am trying to trabsfer on to a C3650, please help?

Larry Craig · ‎11-02-2015

The transfer problem was all in the syntax of what I was typing.