: Look for the exact filename MS3458 U801 3840x2160 Vios TV49174K.rar on specialized electronics forums or firmware repositories.
: Press and hold the Power button on the TV (not the remote) and plug the TV back into the power outlet while still holding the button. Download MS3458 U801 3840x2160 Vios TV49174K rar
: The TV will usually restart automatically once the process is 100% complete. Troubleshooting Tips : Look for the exact filename MS3458 U801