Downloading and installing multi-part firmware for the (3840x2160) requires careful preparation, as using the wrong firmware version for your specific panel can permanently damage your TV. 1. Download & Prepare Firmware Files
Follow these steps to update the board via USB: Power Down : Unplug the TV from the wall outlet.
Right-click on ( part01.rar ) using a tool like WinRAR or 7-Zip . Download MT5522S PC822 3840x2160 Telefunken part04 rar
Select . The software will automatically pull data from all other parts (including part04 ) to create a single usable file, typically ending in .pkg or .bin . 2. Prepare the USB Drive
: Ensure you have downloaded all parts of the archive. The extraction will fail if any part, such as part04.rar , is missing. Right-click on ( part01
: Verify the filename matches what is expected for your board; some versions require renaming the file to allupgrade_5522_sos.pkg to trigger a recovery. 3. Installation Procedure
: The standby LED should begin flashing (often red/green or fast red), indicating the update is in progress. While holding the button
While holding the button, plug the TV back into the power outlet.