First,My FCMini is not truly brick.
I had forgot that the stock boot0 is no message without pressing 's' keys!
So with 's' keys , boot0 show messsage as boot1 has wrong checksum.
This is my perfect NESC stock boot0 messages
And , this is my zombie FCMini stock message
It is clearly what causes my brick will not wake up.
madmonkey gives me u-boot update tools,I can continue to trying update.