Hi,
try with this procedure
Recovering from a Software Failure
Switch software can be corrupted during an upgrade, by downloading the wrong file to the switch, and
by deleting the image file. In all of these cases, th
e switch does not pass the power-on self-test (POST),
and there is no connectivity.
This procedure uses the Xmodem Protocol to recover from a corrupt or wrong image file. There are many
software packages that support the Xmodem Protocol, and this procedure is largely dependent on the
emulation software that you are using.
This recovery procedure requires that
you have physical access to the switch.
Step 1
From your PC, download the software image tar file (image_filename.tar) from Cisco.com.
The Cisco IOS image is stored as a bin file in a directory in the tar file. For information about locating
the software image files on Cisco.com, see the release notes.
Step 2
Extract the bin file from the tar file.
•
If you are using Windows, use a zip program that can read a tar file. Use the zip program to navigate
to and extract the bin file.
•
If you are using UNIX, follow these steps:
1.
Display the contents of the tar file by using the
tar -tvf
<
image_filename.tar
> UNIX command.
switch%
tar -tvf
image_filename.tar
2.
Locate the bin file, and extract it by using the
tar -xvf
<
image_filename.tar
>
<
image_filename.bin
> UNIX command.
switch%
tar -xvf
image_filename.tar
image_filename.bin
x c3750-ipservices-mz.122-25.SEB/c3750-ipservices-mz.122-25.SEB.bin, 3970586
bytes, 7756 tape blocks
3.
Verify that the bin file was extracted by using the
ls -l
<
image_filename.bin
> UNIX command.
switch%
ls -l
image_filename.bin
-rw-r--r-- 1 boba 3970586 Apr 21 12:00
c3750-ipservices-mz.122-25.SEB/c3750-ipservices-mz.122-25.SEB.bin
Step 3
Connect your PC with terminal-emulation software supporting the Xmodem Protocol to the switch console port.
Step 4
Set the line speed on the emulation software to 9600 baud.
Step 5
Unplug the switch power cord.
Step 6
Press the Mode button and at the same time, reconnect the power cord to the switch.
You can release the Mode button a second or two after the LED above port 1 goes off. Several lines of
information about the software appear along with instructions:
The system has been interrupted prior to initializing the flash file system. The following
commands will initialize the flash file system, and finish loading the operating system software#
flash_init
load_helper
boot
Catalyst 3750 Switch Software Configuration Guide OL-8550-02 Chapter 43 Troubleshooting Recovering from a Lost or Forgotten Password
Step 7
Initialize the flash file system:
switch:
flash_init
Step 8
If you had set the console port speed to anything othe
r than 9600, it has been reset to that particular
speed. Change the emulat
ion software line speed to match that of the switch console port.
Step 9
Load any helper files:
switch:
load_helper
Step 10
Start the file transfer by using the Xmodem Protocol.
switch:
copy xmodem: flash:
image_filename.bin
Step 11
After the Xmodem request appears, use the appropriate command on the terminal-emulation software to
start the transfer and to copy the software image into flash memory.
Step 12
Boot the newly downloaded Cisco IOS image.
switch:
boot flash:
image_filename.bin
Step 13
Use the archive download-sw privileged EXEC command to download the software image to the switch
or to the switch stack.
Step 14
Use the reload privileged EXEC command to restart the switch and to verify that the new software image
is operating properly.
Step 15
Delete the flash:
image_filename.bin
file from the switch.
Hope this procedure can help you. Some years ago a had the same problem and i recovered by xmodem procedure. This was a very long procedure, but i recovered the switch.
