Grab your remote. Go to: (or Device Info ). Write down the Model Code (e.g., OLED65CXPUA ).
F:\LG_DTV\SECONDARY\oled_firmware_05.40.09.epk lg tv software update usb
This is the most crucial step. LG produces hundreds of TV models (UQ, UP, NANO, C-Series, G-Series). Firmware is . Installing the wrong firmware can brick your TV permanently. Grab your remote