1. SOP firmware upgrade ETX series (1)
unzip the firmware file - a BIN file named MstarUpgrade.bin will be shown
copy the file MstarUpgrade.bin to an empty Fat32 formatted USB drive
make sure the ETX e-Screen is turned off
insert the USB drive into the USB2.0 slot on the screen (blue arrow), please make sure there are no other USB drives connected to the screen during the upgrade.

2. SOP firmware upgrade ETX series (2)
after inserting the USB drive into the USB 2.0 port, press and hold the power button for 5 seconds and release. The upgrade process will start. Do not touch any buttons or the touch screen during the process.
after the upgrade has finished, the screen will restart automatically.
Note: in case the screen keeps showing the Legamaster start-up logo after restart, manually power of the screen using the mains switch
5sec