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
Ensure you have part1 through part4 of the firmware in the same folder on your computer. Download MT5507 PB801 1920Г—1080 REF48 USB part4 rar
Plug the flash drive into the USB 2.0 port on the TV board. Power On: Plug the TV back into the power outlet. Because firmware files for these boards are often
The TV will scan the drive, find the file, and ask for confirmation to begin. Preparation Ensure you have part1 through part4 of
Ensure the power does not cut out during the update, as this can permanently "brick" the motherboard.
On many models, the indicator light (LED) on the TV will start flashing rapidly, indicating the software is being written.