NanoPC T2 haven't boot to OS Selected

Charlie Nguyen
Dear All,
 I'm facing a problem with NanoPC T2.
 When I inserted my microsd card + case to boot slot of NanoPC T2, I hold
Boot and Power Button, But The scress just display a Penguins with two guns
and a text :" Wait For Update".
 I waited to long time but nothing happend.
 I try to power and press boot button so NanoPC booted to AndroidOS.
 I'm using s5p4418-eflasher-sd8g-20161117-full.img image to flash OS to
eMMC Memory.
 Anyone can help me troubleshoot this problem?
 Thank

fulljob
I HAVE SAME PROBLEM . 
PLASE HELP

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