P75-2841v6.0 Firmware
: Attempting to flash v6.0 on unsupported hardware (e.g., P75-2840 series) will result in “Firmware Mismatch Error” at 20% installation. Some users have reported permanent bricking.
Insert the USB into the TV's USB port while it is unplugged. P75-2841v6.0 Firmware
You typically search for P75-2841v6.0 firmware under three specific circumstances: : Attempting to flash v6