If the TV does not respond to USB, you may need an RT809F/H Programmer to flash the IC directly.
.bin (Binary file), which is flashed directly to the TV's SPI Flash IC (usually the 25Qxx series) or via USB if the bootloader is functional. Download CV56BH Y43 BLUE BOARD BIN
Flashing the wrong firmware (e.g., mismatched resolution) can lead to a "flipped" image, solarized colors, or a completely bricked device. If the TV does not respond to USB,