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While holding the button, plug the TV back into the power outlet.

Because this is a generic board, firmware is usually shared via community forums or technician repositories rather than an official manufacturer website. While holding the button, plug the TV back

: Ensure the firmware matches your panel resolution exactly (1920x1080). Installing the wrong resolution firmware can result in a black screen or distorted image. While holding the button

: Extract the downloaded firmware. Copy the raw file (often named allupgrade_...pkg or RT2831...bin ) to the root directory of the USB drive. Do not put it in a folder. Initiate Flashing : Turn off the TV and unplug it from power. Insert the USB drive into the TV's USB port. While holding the button, plug the TV back