You can update the firmware on you controller.
Depending on what version you have you have to choose from below
But you need to install a driver on you PC, and a little program to transfer the firmware. see below
Black background and white text
White background and black text, has a asymetric metal frame
Same 4 Line display as the first one here, but has Grapic gearindicator
This is the display used on all new controllers OLED, Black background and white text (Graphic)
update of firmware Install Driver
(Wery importent connect PC to controller when stationary, as the controller restart when connected)
You need to connect the box to you PC,
When connectet go to Device Manager, here the Arduino Mega 2560 (and Port number) should show up.
But only if it can find the rigth driver.
Program to upload new Firmware
It will look like this
Hex file send to you, is choosen.
Device Choose (Mega(ATMEGA2560)
Comport (To find you comport look in Device Manager )
Press Upload and wait until it says uploaded it takes around 60 second