Use the Rufus tool or standard Windows formatting to ensure the drive is FAT32 .
If your device is "bricked" (stuck on the boot logo), you must use the HiTool STB software and a . hi3798mv100 firmware
Open the box and connect the TX, RX, and GND pins of your adapter to the corresponding pads on the motherboard. Use the Rufus tool or standard Windows formatting
Power off the box. Insert the USB drive. Use a toothpick to hold the Reset button (usually hidden inside the AV port or between USB ports) while plugging the power back in. Release when the Android logo appears. Method 2: HiTool (Recovery/Unbricking) Power off the box
Select the correct chip ID (Hi3798MV100) and load the emmc_partitions.xml file provided with your firmware.
Some hybrid satellite/IPTV boxes with this chip support Enigma2 images, which are highly customizable Linux-based OSes for TV reception. How to Flash the Firmware