To download the firmware for the mainboard specifically matched for the LC390TU1A panel, you can use specialized technician repositories like Receiver Pro or Software Zone .
The is a universal "three-in-one" motherboard commonly used in 32" to 40" LED/LCD TVs. Mainboard Model: TP.VST59S.PB801
Below is a technical report on the board and panel specifications to ensure a safe installation. 🛠️ Hardware Specifications
Flashing the wrong firmware can "brick" the board or cause a distorted/upside-down image.
Extract the .rar file and copy the .bin file to the root of the USB drive. Preparation: Unplug the TV from power. Flashing Process: Insert the USB into the TV's USB port. Press and hold the Power button on the TV keypad.
Plug the TV back into the AC outlet while still holding the button.
Up to 1920x1080 (Full HD), though the LC390TU1A panel typically uses 1366x768 Panel Model: Panda LC390TU1A (39-inch Cell) Input Ports: HDMI, USB, VGA, AV, and RF (Tuner) Backlight Output: 45V–94V (approx. 45W) ⚡ Firmware Installation Guide