Mstar Android Tv Firmware Tools Official
If your TV is working fine, it is best to rely on official OTA (Over-the-Air) updates rather than manual USB flashing.
Warning: Modifying TV firmware voids warranties and carries a risk of permanent damage. Proceed only if you have a USB-to-TTL adapter and basic soldering skills (for serial pins). mstar android tv firmware tools
The (e.g., stuck on logo, completely dead, looping) If your TV is working fine, it is

