Hi3798 Firmware -

: Ensure you are using a standard HDMI port. Some firmware defaults to a display resolution (like 4K) that older 1080p TVs cannot display during the first boot. Try connecting the box to a newer display.

Solution: This usually happens when data partitions aren't properly wiped. Boot back into the stock recovery menu using the toothpick method and select "Wipe Data/Factory Reset" and "Wipe Cache Partition". hi3798 firmware

; the USB 3.0 port often does not support firmware upgrades. B. Low-Level Flashing (Huawei Hi-Tool) : Ensure you are using a standard HDMI port