curl: (71) TFTP: Illegal operation

Am attaching a snapshot of the output error  from the TFTP server in Orion. I got this message while trying to transfer EOS firmware. The same job script worked on all other switches but only this switch is having the error below:

 

45  990M   45  450M    0     0  1219k      0  0:13:51  0:06:18  0:07:33  603k

   45  990M   45  450M    0     0  1167k      0  0:14:28  0:06:35  0:07:53  130k

   45  990M   45  450M    0     0  1167k      0  0:14:28  0:06:35  0:07:53   98k

   45  990M   45  450M    0     0  1167k      0  0:14:28  0:06:35  0:07:53 1167k

  curl: (71) TFTP: Illegal operation

  % Error copying tftp:/10.10.200.13/EOS-4.26.5M.swi to flash:/EOS-4.26.5M.swi ()

   63  990M   63  630M    0     0  1038k      0  0:16:16  0:10:21  0:05:55 1862k

   63  990M   63  631M    0     0  1038k      0  0:16:16  0:10:22  0:05:54 1532k

   63  990M   63  632M    0     0  1013k      0  0:16:40  0:10:38  0:06:02  305k

   63  990M   63  632M    0     0  1013k      0  0:16:40  0:10:38  0:06:02  194k

   63  990M   63  632M    0     0  1013k      0  0:16:40  0:10:38  0:06:02 1013k

  curl: (71) TFTP: Illegal operation

  % Error copying tftp:/10.10.200.13/EOS-4.26.5M.swi to flash:/EOS-4.26.5M.swi ().

Have been trying to resolve this error and I think I need some help here.

FYI: There is enough memory on the flash (5331972096 bytes free) and the image size is 990MB