For downgrade your firmware from 0.71 to 0.57 you have to follow these steps:

1. install the game code System Update

Download the file here attached: it's called " pbfup1.upd " 669Bytes

  1. Power on machine.
  2. Enter service mode - > actions (all the way down) -> GAME UPDATE (follow the instructions on screen)
  3. After the game is back in attract mode -> power off.
  4. Remove the USB stick.
  5. Power on.


2. install the Firmware 0.57 ("FIRMWARE UPDATE")

Download the file here attached: it's called " Firmware.uf2 " 97KB

  1. Power on machine.
  2. Enter service mode - > actions (all the way down) -> firmware update (follow the instructions on screen)
  3. After the game is back in attract mode -> power off.
  4. Remove the USB stick.
  5. Power on.


3. install the gamecode 3.0:

You can find game code file here: Alien - Delta game update. (3.0)


  1. Power on machine.
  2. Enter service mode - > actions (all the way down) -> GAME UPDATE (follow the instructions on screen)
  3. After the game is back in attract mode -> power off.
  4. Remove the USB stick.
  5. Power on.



If you see "unknown error" message on screen, machine will be unresponsive. this mean it is stuck with bootloader open, do not fear, you can power off and try again, but let us know asap if you get into this error



After you power up game enter service menu (one click on the black button) and you are now in the message area. Toggle left or right with the volume buttons, toggle until you see.:

I/O CONTROLLER  
HARDWARE REV. 0.02
FIRMWARE REV. 0.57