switch: CCCCCCCCCCxmodem:: I/O error

[Steve Coady]

hello

I goofed and uploaded a new image to my Cisco 3750.

I deleted the prior image and set the boot flash statement and then used the command boot system flash: old image/new image

This caused me to enter into switch: mode

I have tried various recovery steps

   flash_init

    load_helper

The dir flash still show old image which was deleted. It seemed my only course to reciver was to Xmodem

I am using SecureCRT and tried the TRANSFER XMODEM option, no success

I then issued the following (twice:

switch: copy xmodem: flash:c3750-ipservicesk9-mz.122-55.SE9.bin
Begin the Xmodem or Xmodem-1K transfer now...
CCCCCCCCCCxmodem:: I/O error

switch:

What other options can I try to correct this mistake?

[CiscoSMC]

Could you please tell me if you want to change RJ45 on the switch or CRT software?

[CiscoSMC]

I also encountered the same situation

switch: copy xmodem: flash:c2960-lanbasek9-mz.152-7.E10.bin
Begin the Xmodem or Xmodem-1K transfer now...
CCCCCCCmodem:: I/O error

[maxmeisel]

Just for the ones that run also into such problems, here's my experience: I had USB cable connected for access, it seems to work, but xmodem always failed, after switch to console cable with usb for serial connect the xmodem transfer worked, seems like some issue either with USB-Port or Cable, haven't investigated further, yet.

Also for those who are curious doing it via USB (as there are also entries out there) only a native 2GB stick with FAT/32k allocation was accessible by the bootloader for me. (Basically was my solution as xmodem even with higher BAUD rates take an eternity).