Windows OS

 View Mac OS Instructions

  • 1) This update will only work with a Class 10 microSD Card that is 8GB or larger. You will also need a microSD USB adapter and 8GB of free space on your computer's hard drive. These are available on Amazon.
  • 2) Download the update file here:
  • 3) Unzip this file.
  • 4) Download and install Win32 Disk Imager, which can be found here:
  • 5) Insert your microSD card into your computer.
  • 6) Open Win32 Disk Imager, and under Device, select the microSD card you inserted. Be careful not to select an external hard drive or another device, or it will be overwritten.
  • 7) Select the folder icon to open the Medieval Madness upgrade file.
  • 8) Click "Write" to start writing to the card. This will take about 10 minutes. When complete, you will get a message "Write Successful". Close Win32 Disk Imager and remove the card.
  • 9) With the game powered off, install the card in the controller board, behind the marquee translite. Power the game on, and you will see a message that the new version is installing.
  • 10) When you see the following message, power off the game, remove the card, and power the game back on.


This version includes the following enhancements and bug fixes:

  • 1) Next generation graphics engine to support full color display upgrade and address previous screen tearing issue.
  • 2) Addition of Castle Multiball jackpot voice call.
  • 3) Modifications to real time clock.
  • 4) Addition of adjustment for controlled playfield LEDs.
  • 5) Addition of adjustment for trough coil strength.
  • 6) Resolution of audio crackling issue.


This version includes the following enhancements and bug fixes:

  • 1) Fixed bug in OS causing date and time to reset.