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.
Use a tool like WinRAR or 7-Zip . Right-click on Part 1 and select "Extract Here." This will automatically combine all parts into a single usable file, typically ending in .bin or .img . Download MT5507 PB801 1920Г—1080 REF48 USB part4 rar
Use a standard USB flash drive (ideally 8GB or smaller). Format it to FAT32 . Move the extracted
Ensure you have part1 through part4 of the firmware in the same folder on your computer. Use a standard USB flash drive (ideally 8GB or smaller)
Because firmware files for these boards are often large, they are typically split into multiple parts (e.g., part1.rar , part2.rar , etc.) to make downloading easier. To use the software, you must download and extract them together. Step-by-Step Installation Guide 1. Preparation