SCV31 after flash combination file, can't flash Stock System

Hello Team
i need to unlock SCV31
i flash combination file
COMBINATION_KDI_FA50_SCV31KDU1AOE1_KDI1AOE1_CL4828 741_QB4857779_REV02_user_mid_noship.tar

Then now i flash stock file but always get error at writing system img..
here is log

Code:

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[ 11/14/2018 12:13:57 PM ]
 Operation: Flash
 Selected model: SCV31
Software version: 34.3
[ 11/14/2018 12:13:57 PM ]
File analysis... OK
Total file size: 0x119436D26 (4500 Mb)
Searching USB Flash interface... COM7 detected
Setup connection... OK
Reading PIT from phone... OK
Sending boot.img... OK
Sending recovery.img... OK
Sending system.img... error timeout

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i try with odin but no luck
i change firmware but still same.......
now what to do? any solution??