on the TV panel (not the remote).
motherboard, you typically need to source the .rar file from technician-specific forums and flash it via USB. Step 1: Download the Firmware Dump on the TV panel (not the remote)
Insert the USB drive into the USB port (use the 2.0 port if labeled). on the TV panel (not the remote)
Do you have the (usually found on a sticker inside the TV) to verify if the dump file you found is compatible? How do I update my DVLED Display's firmware? - ViewSonic on the TV panel (not the remote)
Finding the specific starlight 42715 carte mere msd306 68a 12023.rar file often requires visiting specialized electronics repair sites.
While holding the button, plug the TV back into the power outlet.