To update the MiniX firmware, you can do this in various ways.
-Via a Micro SD card
-Upload a newer firmware via de Linux “DD” command
-Through a hardware flasher, currently investigated by J1nx.
The first method seems the easiest but somewhat undocumented.
-Have a MicroSD card, some say it needs to be >=8GB but I doubt that’s true
-Start up PhoenixCard and burn the IMG firmare file to the stick
-WAIT until the full “Rate” bar is filled. Boot loader burn [sucess] is NOT completed yet.
-It takes around 3-5 minutes to fully burn the firmware file, so please be patient.
-Phoenixcard does 3 checks to ensure the firmware is flashed correctly.
Put the card into the MiniX, and only connect the powersupply after this.
The LED goes on, and turns off when flashing is complete. After this, remove the card and boot normally by connecting the USB cable for ADB or power supply for connection to TV.