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Cisco_2950_IOS_Install

Step-by-Step Recovery Procedure

Use this solution to solve the problem.

Note: A PC must be attached to the console port of the switch, as the Prerequisites section of this document states.

If the switch is in a continuous reboot, complete one of the procedures in this step, which depends on your switch model.
Note: If the switch is not in a continuous reboot, but is already at the switch: prompt,

Proceed directly to Step 2.

Catalyst 2940 and 2950 series switches
Unplug the power cord.
Hold down the MODE button while you reconnect the power cable to the switch.
The MODE button is on the left side of the front panel.
Release the MODE button after the STAT LED goes out.
Note: The LED position can vary slightly, which depends on the model.
You are now at the switch: prompt.

switch: flash_init
switch: load_helper
switch: dir flash:
switch: copy xmodem: flash:c2955-i6q4l2-mz.121-13.EA1.bin (Downloded New IOS)

Begin the Xmodem or Xmodem-1K transfer now... CCC
From the top of the HyperTerminal window, choose Transfer > Send File
Choose the Xmodem protocol in the Send File dialog box and click Browse in order to select the Cisco IOS image (.bin file) that you downloaded previously.

Click Send in order to begin the Xmodem transfer.
The Xmodem file transfer begins. This transfer can take up to 2 hours, which depends on the size of the image.
CCCCCCC.........................................................................
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________________________________________________________________________________________________________________________________

->dir flash:c3550-i5q3l2-mz.121-13.EA1
->Attempt to Boot the Image
After you have verified where the Cisco IOS image file resides, try to boot the image. Issue either the boot flash:filename command or the boot flash:directory/filename command.
Catalyst 2950

switch: boot flash:c2950-i6q4l2-mz.121-13.EA1.bin     
->If necessary, issue the delete command in order to delete any corrupt images that remain. Here is an example:
switch: delete flash:c2950-i6q4l2-mz.121-12c.EA1.bin        

http://www.cisco.com/en/US/products/hw/switches/ps628/products_tech_note09186a0080169696.shtml

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