Visit the official Dynabook (Toshiba Support) Portal and enter your specific model number (65U7750) to see if a downloadable USB update is available.
Select or Update Now to download and install the latest version directly over Wi-Fi. Via USB (Official Support): Download TOSHIBA 65U7750 Panel K650WD7 LF330 part3 rar
If you are looking for a standard software update to fix bugs or improve performance, use the official built-in methods provided by Toshiba: Visit the official Dynabook (Toshiba Support) Portal and
Direct downloads for specific TV panel firmware files like are generally not available on official manufacturer websites. These files are typically used for "flashing" or repairing a TV mainboard to match a specific LCD panel and are often found on specialized technician forums or file-sharing sites. Official Methods to Update Firmware These files are typically used for "flashing" or
Open Part 1 with a tool like WinRAR or 7-Zip, and it will automatically combine the remaining parts.