: The standby LED should begin flashing (often red/green or fast red), indicating the update is in progress.
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 Download MT5522S PC822 3840x2160 Telefunken part04 rar
: Place all downloaded .rar parts into the same folder on your computer. Extract : : The standby LED should begin flashing (often
: Once the LED flashes rapidly or stops, unplug the TV, remove the USB drive, and wait two minutes before powering it back on. unplug the TV
: Use a high-quality USB flash drive and format it to FAT32 .