Unhappy Help me to unbrick onda V701s

Hi all,

I am using Onda V701s. It has been rooted with a programe for allwinner A31s from xda-developers (by me, of couse). I know that because it has X icon whenever it starts. But now I can not start it. It stops at X icon and can not go further. I think it has been brick.

So, please help me fix it.
Thanks so muck

Sorry about my poor English.