NanoPC T2 haven't boot to OS Selected

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

I HAVE SAME PROBLEM . 
PLASE HELP

Hi,T2 key programmer firmware we have updated, you can download to try, if
there is no system choice of programming interface, you need to check
whether there is a problem with the SD card, SD card 8G or more
suggestions. Press the boot button before power up, power supply is
recommended by 5V/2A.