Large firmware files are often split into multiple parts (e.g., part01.rar through part04.rar ).
Right-click on ( part01.rar ) using a tool like WinRAR or 7-Zip . Download MT5522S PC822 3840x2160 Telefunken part04 rar
: Use a high-quality USB flash drive and format it to FAT32 . Large firmware files are often split into multiple parts (e
: Place all downloaded .rar parts into the same folder on your computer. Extract : indicating the update is in progress.
While holding the button, plug the TV back into the power outlet.
: The standby LED should begin flashing (often red/green or fast red), indicating the update is in progress.