You can find the firmware for the (1920x1080 resolution) available for download on community-sharing platforms that host TV software archives. Download Sources
Copy the extracted .bin file to the root directory (not in a folder). You can find the firmware for the (1920x1080
: Once downloaded, extract the .rar file. You should typically find a .bin file inside (often named allupgrade_msd306.bin or similar). USB Update : Format a USB drive to FAT32 . You can find the firmware for the (1920x1080