odin failed

[worldinword]

Hello
for g920f odin failed and this is odin's log:

added
enter cs for md5
check md5..dont unplug the cable
please wsit
checking md5 finished succesfuly
leave cs
odin engine v (id:3.1101)
filr analysis
setup connection
intialzation
get pit from mapping
firmware update start
single download
shoot.bin
nand write start
fail
complete write operation failed
all threats completed(succed 0 /) failed 1

what is the problem?