Ensure the power does not cut out during the update, as this can permanently "brick" the motherboard.
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 Download MT5507 PB801 1920Г—1080 REF48 USB part4 rar
The TV will scan the drive, find the file, and ask for confirmation to begin. Ensure the power does not cut out during
Only install this if your TV panel is exactly 1920×1080 . Installing 1080p firmware on a 720p (1366x768) screen can cause a distorted display or a "black screen". Step-by-Step Installation Guide 1
Sites like Kazmi Elecom often host these specific universal board files if you are missing any parts.
Use a standard USB flash drive (ideally 8GB or smaller). Format it to FAT32 .