This is not working OK IMG cccccccc error?

Unprotecting Flash...
.. done
Un-Protected 2 sectors
Erasing Flash...
.. done
Erased 2 sectors
Writing to Flash...
........ done
Protecting Flash...
.. done
Protected 2 sectors
 2  1  0

Loading from NAND 512MiB 3,3V 8-bit, offset 0x18000000

** Bad Magic Number 0x6ef32fe6 **
## Booting image at 80000000 ...
Bad Magic Number
## Ready for binary (ymodem) download to 0x80000000 at 115200 bps...
CCCC