(and compatible models using the same motherboard). This update is typically used to fix "stuck on logo" issues or system crashes.
: 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
: Look for the exact filename MS3458 U801 3840x2160 Vios TV49174K.rar on specialized electronics forums or firmware repositories. (and compatible models using the same motherboard)
: Once the standby light begins to flash rapidly or an "Upgrading" screen appears, release the button. Do not turn off the TV during this process. Download MS3458 U801 3840x2160 Vios TV49174K rar
: Use a USB drive (8GB or smaller is often most compatible) and format it to FAT32 .