[nsp] xmodem transfer fails with "No ACK on EOT"

[Sam Stickland]

Following up to the questions I had:

I've tried various transfer modes, including xmodem -cxy (checksum, y-modem,
and no-execute). Everytime minicom eventually reports "No ACK on EOT". The
does nothing until I press any key and then it responds 'command "......."
not found'

Nothing gets written to the flash. 'dir flash:' only reports the old image
(marked as deleted).

I've also tried uploading small (~7k) non executable files to the flash.
Again nothing gets written to flash, but this time the router complains
about the file not being executable (dispite the no-execute 'x' option being
given - are no valid IOS files/images allowed to be uploaded?), and minicom
complains "modem sectors/kbytes sent:   0/ 0kRetry 0: NAK on sector" a few
times.

Does anyone have any ideas what I should try next - I don't have any windows
machines immediately to hand to try hyperterminal with. Can anyone recommend
any other xmodem programs for Linux that aren't based around lrzs?

Sam

Sam Stickland <sam_ml at spacething.org> wrote:
> Hi,
>
> Has anyone got any idea why an xmodem transfer of an IOS image would
> progress all the way to the end and then say "No ACK on EOT". This is
> using minicom with lrzs 0.12.20 onto a Cisco 3640 in rommon mode.
>
> Google searches didn't seem to reveal that much. Where should I start
> looking?
>
> Sam
>
>
>
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