Help with 3550 Flash system

[Lucas.maupin1]

I am having difficulty getting my switch to boot. I think it is a bad flash file. Any way to remedy this? Here is some output

[Lucas.maupin1]

switch: ?
           ? -- Present list of available commands
        boot -- Load and boot an executable image
         cat -- Concatenate (type) file(s)
        copy -- Copy a file
      delete -- Delete file(s)
         dir -- List files in directories
  flash_init -- Initialize flash filesystem(s)
      format -- Format a filesystem
        fsck -- Check filesystem consistency
        help -- Present list of available commands
 load_helper -- Load and initialize a helper image
      memory -- Present memory heap utilization information
       mkdir -- Create dir(s)
        more -- Concatenate (display) file(s)
      rename -- Rename a file
       reset -- Reset the system
       rmdir -- Delete empty dir(s)
         set -- Set or display environment variables
   set_param -- Set system parameters in flash
       sleep -- Pause (sleep) for a specified number of seconds
        trap -- Cause a software breakpoint to occur
 -- MORE --
        type -- Concatenate (type) file(s)
       unset -- Unset one or more environment variables
     version -- Display boot loader version
switch: flash_init
Initializing Flash...
...The flash is already initialized.
switch: boot
Loading "flash:c3550-i9q3l2-mz.121-14.EA1a/c3550-i9q3l2-mz.121-14.EA1a.bin"...flash:c3550-i9q3l2-mz.121-14.EA1a/c3550-i9q3l2-mz.121-14.EA1a.bin: magic number mismatch: bad mzip file

Error loading "flash:c3550-i9q3l2-mz.121-14.EA1a/c3550-i9q3l2-mz.121-14.EA1a.bin"

Interrupt within 5 seconds to abort boot process.
Boot process failed...
switch:

[Lucas.maupin1]

Other output to add. I can't get into xmodem, because it is set to read only. Is there a way to change this? Output below:

List of filesystems currently registered:

               flash[0]: (read-write)
              xmodem[1]: (read-only)
                null[2]: (read-write)
                  bs[3]: (read-only)

switch: dir xmodem
unable to stat xmodem/: permission denied
switch: dir xmodem:
unable to stat xmodem:/: invalid argument
\

[Lucas.maupin1]

SOLUTION:

I seemed to solve the problem on my own. I used the following article

http://www.cisco.com/c/en/us/support/docs/switches/catalyst-2950-series-switches/41845-192.html#subtopic1a

I hate to answer my own question, but I'm sure one day someone will need to answer the same issue.