Because these files are often split into multiple parts (like part01.rar ), you generally need to download into the same folder before extracting the first one. Potential Download Sources
Use a high-quality USB 2.0 drive formatted to FAT32 . Because these files are often split into multiple
The firmware files for the (mainboard LDD.M538.B138 ) with a 3840x2160 resolution are typically hosted on specialized electronics repair and firmware archives. Because these files are often split into multiple
Copy the extracted .bin file to the root of the USB, plug it into the TV while unplugged from power, then hold the Power button while plugging it back in to trigger the auto-update. Because these files are often split into multiple
Many TV technicians share these specific dumps (USB upgrade files or EMMC dumps) on community forums. Important Installation Notes