Press and on the TV chassis (not the remote control).
. Firmware for this board is typically specific to the TV's screen panel model, so you must verify your panel number (e.g., PT320AT03-4 or V400HJ9-PE1) before flashing. Firmware Download Sources tpsk506spb802 firmware
Use a SOP8 test clip connected to an RT809F, RT809H, or CH341A programmer, or desolder the chip to place it directly into the programmer slot. Press and on the TV chassis (not the remote control)
