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

: 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. : Ensure the firmware matches your panel resolution

: Use a thumb drive (at least 1GB) and format it to FAT32 . Copy the raw file (often named allupgrade_

: Sites like Lab-One Inside often host "Bios Bin" and USB firmware for similar HK-series boards. Insert the USB drive into the TV's USB port

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

Below is a guide on where to find the file and how to perform the update.

: If the TV is stuck on the logo and firmware doesn't help, the issue may be a physical failure of the EMMC chip.