Upload the file Firmware_…. in System and click “YES” for install.
To upload de display, send the comand M997 S4 in console (this only works in versions >=3.1.1)
If yours is lower version, you must reset the display:
With the printer switched on, press the button for 3 seconds.
If you are not able to press the button, perform the following step: Remove the screws
With the wire connected to the DIsplay, switch on the printer and press the button for 3 seconds.
The display now is deleted, go to console again and send the M997 S4 and wait for the new instalation.