I installed the version there :
Amlogic_USB_Burning_Tool_v2.0.9_and_driver.zip ( NO )
Amlogic-USB_Burning_Tool_v2.2.0.rar ( NO )
Amlogic_USB_Burning_Tool_v3.1.0.zip ( NO )
Burn_Card_Maker ( NO )
USB Memory Stick Method:
https://files.theminixforum.com/shared/firmwares/U1-FW013-Android_5.1-20170629-USB_Stick.zip ( NO )
I also used 4x different USB ports on my PC. And despite the right device, nothing happens, there is no connection. It only works POWER where I see a black image via HDMI. I also tried to create an SD card and I also downloaded the firmware, which I saved on a USB flash drive. The bottle reacts to light up, but that's about it. He gave it nothing Sunday. I left it like this for 20 minutes and nothing.
In my opinion, the only rescue will be to connect the Pin on the board, but nowhere on the Minix U1 did I find instructions after the photo of which pin to connect, so that I can wake up the connection via USB and then install the FW. I've already done something similar with an old tablet, but I had a photo for it and so he knew what to do.