Load the downloaded .bin file into your programmer software and write it to the chip.
If your Hisense LTN40D50EU LED TV is stuck on the logo, restart-looping, or showing a blank screen with the backlight on, the issue is often corrupted firmware. In these cases, a standard USB update might not work, and you will need a file to flash directly to the SPI Flash memory chip. 1. Hardware Specifications
If the TV still won't boot, you may need to check the power supply voltages or replace the board entirely, which is available on Amazon or eBay.