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 .
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. Download MT5507 PB801 1920Г—1080 REF48 USB part4 rar
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 . Do not power off the TV or remove
The file you are looking for relates to the universal smart LED TV motherboard. This specific firmware is designed for a screen resolution of 1920×1080 with a REF48 (likely 48Hz or a specific panel reference) configuration. Alternative (Manual Menu Method) If the TV still
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".
Sites like Kazmi Elecom often host these specific universal board files if you are missing any parts.