Based on the mainboard and model specifications, the following community resources often host this specific dump:
Sites like ElectronicForum.ro and Soft4LED are primary sources for the TQL28R4PR003.112 - TP.S506.PB818 PNL HV280WX2-270 SD.rar file.
Using the wrong firmware dump for your panel (even with the correct mainboard) can result in a distorted image, inverted colors, or a "bricked" device that will not power on. Verify that your panel model matches HV280WX2-270 before proceeding.
After writing, use the "Verify" function in your programmer software to ensure the data on the chip matches the buffer perfectly.
This is a . Unlike a standard USB update, a "dump" file is meant to be written directly to the TV's memory chip.