While holding the button, plug the TV back into the power outlet.
Use a high-quality USB 2.0 drive (8GB or 16GB is usually best). Format the drive to . While holding the button, plug the TV back
Download all required parts into the on your PC. While holding the button
: Firmware for these boards is often hosted on community-driven technical sites like Softwarezone.ga (via Telegram) or Hashmielecom . While holding the button, plug the TV back
Keep holding the button until the "Software Upgrading" or a progress bar appears on the screen.