Move the extracted .bin or .img file to the root directory of the USB drive. Do not put it inside any folders, or the TV will not find it. 2. Installation (The "Auto-Update" Method) Most MT5507 boards use an automatic bootloader update: Power Off: Unplug the TV from the wall.
The TV will scan the drive, find the file, and ask for confirmation to begin. Download MT5507 PB801 1920Г—1080 REF48 USB part4 rar
Ensure you have part1 through part4 of the firmware in the same folder on your computer. Move the extracted