So my brother in law just got a Firepower today. It seems to be working great. When I inspected it for him before purchase it wasn’t on free play. Not a big deal it’s usually as it’s most likely that someone didn’t know about setting menu 18 To zero. Some people don’t know how to do that so a deal was made and I loaded it up.

When we got it set up at his house we went through the menu system and set 18 (maximum credits to 00) then power cycled machine and hit credit button and it didn’t work to start the game.

So we did a factory reset on the board and tried again. Still no dice.
It’s got NVRAM installed. Not sure that would effect it.

We tried again... no dice then back into menu 18 set max credits back to 20 and then operate the coin mech Switch it hit start and it works!

We are puzzled why it’s not allowing us to set it to free play. We own two other System 6’s and they work on free play (blackout and gorgar).

I’m stretching my head as to why this isn’t working... any ideas??