Release the button once the "Software Updating" or progress bar appears on the screen. Important Precautions
: These firmware updates are usually split into multiple parts (e.g., part01, part02). You must download all parts into the same folder on your computer before attempting to extract them. Download 43SU128 49SU131 55SU134 Firmware part02 rar
: Ensure your TV sticker matches 43SU128 , 49SU131 , or 55SU134 exactly. Using the wrong firmware version can cause screen inversion or remote control failure. Release the button once the "Software Updating" or
: Format a USB flash drive (8GB or 16GB) to FAT32 . Copy the extracted firmware file directly to the root directory of the drive (do not put it in a folder). Flashing the TV : Turn off the TV and unplug it from the power outlet. : Ensure your TV sticker matches 43SU128 ,
To download the , you typically need to visit official support portals or verified community forums specific to these TV models (often associated with brands like Skyworth or Coocaa). Direct Download & Installation Steps