Gamebox 400 in 1 Add/Delete Menu

Anyone? I tried the buttons on the PCB, I also hooked up pin 15 on the parts side but test won't register. I know there a menu, I owned a earlier Gamebox 108 in 1 and the test button off the jamma harness opened the menu. Also there are like 9 games that are removed when the pcb comes from the factory. There's got to be a way.
 
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