Dear @ophub,

So, i installed armbian on my HG680P emmc using armbian-install, and it's already okay... But when i'm restarting it, my STB didnt responding until i'm inserting and sdcard that already burn by bootcardmaker with HG680P u-boot...

Do you have any idea to fix the bootloader (?)

Here's the HG680P u-boot file, it's 4MB u-boot...
uboot.zip