Primarily used for 26" to 49" LED panels with resolutions of either 1366x768 or 1920x1080 . How to Update Firmware via USB
If the mainboard was replaced but displays the wrong resolution or inverted colors. How to Install P75-2841v6.0 Firmware via USB P75-2841v6.0 Firmware
: If your picture is upside down after an update, you can often fix this in the Service Menu. On many models, press MENU + 2008 or SOURCE + 2580 on the remote to access factory settings, then look for a Mirror Mode option to toggle. Primarily used for 26" to 49" LED panels