Unzip the file.
Copy the firmware file corresponding to your model to the USB disk root directory,
do NOT rename the file.
Insert the USB stick in the monitor.
Press the home button on the remote control, select “Option”
On the right select “Firmware update”, then select “yes” with the arrow keys on the remote control, FW will update by itself.
After finish upgrade process, the monitor will reboot by itself.
Remove the USB disk from the monitor.
Check if the software version is correct: Press “Home 1999 return” on the remote control to enter factory mode > a blue screen will appear on the left side.
Wait until the menu is present before pressing the “1999 return” buttons.
If the firmware is correct do factory reset.
The firmware version can also be checked in the option menu, monitor information.
AC repower once finished.