First of all try running LE from SD card on that box. You may need to unlock the bootloader first. When choosing device tree, simply delete dtb.img from SD card with LE and do not download any other device tree.
Doesn't look like it's booting the card I'm assuming Xiaomi have some type of secure boot so bootloader has to be unlocked to boot unsigned code
I applied for bootloader unlock we'll see when I'll get word from Xiaomi