You can find the physical motherboard on AliExpress or eBay .
(or V6.0): This is a popular 4K WiFi network TV motherboard . It is often used as a replacement part for various smart TV brands (like Xion) or for DIY projects to upgrade screens to 4K resolution. Download P150 2851V6 3840x2160 FRESH part02 rar
Installing the wrong firmware on a TV motherboard can "brick" the device (make it unusable). Ensure the panel voltage and resolution of the firmware exactly match your hardware before attempting to flash it via USB. Are you trying to repair a TV, or You can find the physical motherboard on AliExpress or eBay