(HD Ready), which matches the native resolution of most 32-inch LED panels.
Use WinRAR or 7-Zip to extract "Part 01"; it will automatically pull data from Part 09 and other pieces to create one single firmware file. Download MS338 PB819 1366x768 REF30 part09 rar
Likely refers to a specific hardware revision or panel reference configuration required for the firmware to display colors and orientation correctly. (HD Ready), which matches the native resolution of
Copy the extracted file (usually named allupgrade_ms338_4G_sos.bin or similar) to the root of the USB. Download MS338 PB819 1366x768 REF30 part09 rar
Firmware for these boards is typically hosted on specialized TV technician forums or shared via Google Drive links from repair communities: