The file you are looking for is often hosted on platforms like KenotronTV or Lab-One Forum , which provide USB firmware and BIOS bin files for Chinese LED/LCD TV boards.
If you have successfully downloaded all parts (including "part3.rar"), follow these steps to update your TV via USB: The file you are looking for is often
While holding the button, plug the TV back into the power outlet. The file you are looking for is often