Use a tool like WinRAR or 7-Zip. Right-click on Part 1 and select "Extract Here"; the software will automatically pull data from the other parts.
Ensure you have the complete set of .rar files (e.g., part1.rar through partX.rar). Download MT5508 U801 1920x1080 POLYTRON part1 rar
1920x1080 (Full HD). While the board supports 4K, firmware files are often configured for specific panel resolutions used in different TV models. Use a tool like WinRAR or 7-Zip
If you're looking for official software or manual downloads, you can check the Polytron Service Portal for verified files. Download MT5508 U801 1920x1080 POLYTRON part1 rar