board cant get kernel image

DHCP client bound to address 10.103.2.195                                       
Using DaVinci-EMAC device                                                       
TFTP from server 192.168.6.59; our IP address is 10.103.2.195; sending through 1
Filename 'pxelinux.0'.                                                          
Load address: 0xc0700000                                                        
Loading: ##                                                                     
done                                                                            
Bytes transferred = 14776 (39b8 hex)                                            
Wrong Image Format for bootm command                                            
ERROR: can't get kernel image!