jpj wrote:apparently it's getting five lives in stock. easiest way to test that would be setting up the board with 4 lives per credit, and no-missing up to stage 3, getting a 1-up from the tank or the midboss.
I used to think this, but I tried doing this (set the extra lives to 4, got a 1UP, then died and one life was subtracted) with my new board and it worked just like it did on my old board. If what Mlejazz says is correct, all you need to do is go into Score Attack mode and die once. If a life is subtracted from the stock, you have the fixed version. If it isn't, and you have infinite lives, you have the original version.
To test for the infinite lives bug in the actual game, it seems you need to start with the default 2 spare lives, and get 3 1UPs in a row without dying, then die. If you don't lose any from your stock then you have the original version.
The original version only crashes when the infinite lives bug has been triggered and you do stuff to jack up the rank.