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
Plug the flash drive into the USB 2.0 port on the TV board. Power On: Plug the TV back into the power outlet. Download MT5507 PB801 1920Г—1080 REF48 USB part4 rar
Sites like Kazmi Elecom often host these specific universal board files if you are missing any parts. Because firmware files for these boards are often
Do not power off the TV or remove the USB until the flashing stops or the TV restarts. This usually takes 3–5 minutes. 3. Alternative (Manual Menu Method) If the TV still turns on and has a working menu: Go to Settings > System > Software Update . Select Update by USB . Preparation Plug the flash drive into the USB 2