Do you have the (found on a sticker inside the TV) to ensure this version is a perfect match for your hardware?
Flashing the wrong firmware can permanently brick your television. Always verify that your Mainboard Model (MS3458-U801) and Panel Number match the file exactly before proceeding. Download MS3458 U801 3840x2160 Cobia CLEDTV5517UHD rar
Below is a template for a forum or blog post designed to help others find or share this specific 4K firmware package. Do you have the (found on a sticker
Press and hold the on the TV panel (not the remote). While holding the button, plug the power cord back in. plug the power cord back in.