If the TV is totally unresponsive, you will need a CH341A programmer or an RT809F/H programmer.
Sudden voltage spikes can interrupt a read/write cycle. hktrt2861v09 firmware fixed
Fixing drops in connectivity for the smart versions of the board. Conclusion If the TV is totally unresponsive, you will
Enabling the "Mirror" toggle in the Service Menu ( Input + 2580 or Menu + 1147 ). If the TV is totally unresponsive
Replaced with a neutral "Smart TV" or "Universal" logo.
Remove the SPI Flash chip (usually an 8-pin 25Qxx series) or use a clip. Back up the original (corrupt) dump.
Copy the bin file (usually named allupgrade_...bin or 61v09.bin ) to the root directory. Insert the USB into the TV's port.