Firmware for these boards is typically hosted on specialized TV technician forums or shared via Google Drive links from repair communities:
Power off the TV, insert the USB, and hold the power button while plugging it back in. The standby light should blink, indicating the update is in progress. Download MS338 PB819 1366x768 REF30 part09 rar
This indicates the full firmware was split into multiple compressed parts (likely 10 or more) to stay within file hosting size limits. You must download every part (part01, part02, etc.) and place them in the same folder to extract the final .bin or .img file. Where to Find the Software Firmware for these boards is typically hosted on
Known for hosting the TP.MS338.PB819 USB Firmware and factory service codes. You must download every part (part01, part02, etc
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.
Likely refers to a specific hardware revision or panel reference configuration required for the firmware to display colors and orientation correctly.