: Look for the exact filename MS3458 U801 3840x2160 Vios TV49174K.rar on specialized electronics forums or firmware repositories.
: Ensure the file is named correctly (usually MstarUpgrade.bin or similar) and that you are using a USB 2.0 port if available. Download MS3458 U801 3840x2160 Vios TV49174K rar
The firmware you are looking for, , is specifically designed for the Vios TV49174K : Look for the exact filename MS3458 U801
: 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. : The TV will usually restart automatically once
: The TV will usually restart automatically once the process is 100% complete. Troubleshooting Tips
: If your TV is still functional and connected to the internet, you can try checking for updates through Settings > Admin & Privacy > Check for Updates (menu layouts vary by brand/region).