Android 7.1 TV booting from USB ports?

[chrbar11]

Hello Ayufan.
Thanks for your great job on Rock64 distrib!

I've flashed u-boot to SPI flash of my Rock64-4GB.
I can boot all your linux img on an USB Key 3.0, it's work perfectly.

I would like to use my Rock64 as TV box running your Android 7.1 TV img:
android-7.1-rock-64-rock64_atv-v0.3.13-r115-raw.img.gz
But it don't boot from USB ports (2.0 or 3.0).
I've tried to imaging the USB Key 3.0 with different ways, but it didn't boot!

Do you plan to allow your Android 7.1 TV img to boot and run on an USB device?

Thanks,
Chris