I have a non eMMC version. I have updated BIOS and Firmware and the box works OK-ish. I have noticed that occasionally it does not boot; and stays stuck on the boot screen at that point I can turn it off with the power button and then I have to remove the power cord before pressing the power button to turn it back on.
For those who have the non eMMC version please check if you have disabled eMCC after the BIOS update.