Firmware for these motherboards is typically hosted on specialized technician forums. You may find similar files or support on sites like Remont-Main or KenotronTV , which often provide EMMC pinouts and USB recovery software.
flashing the wrong firmware or an incomplete backup can permanently damage your TV hardware. Ensure the panel model number on your TV sticker matches the firmware version exactly.
EMMC Backup (used for repairing TVs that are stuck on the logo or have corrupted internal memory).