Quoted from PinMonk:

Found the information. The version we're talking about is 6.02, which is different than the tournament one. At least now we know the version number we're looking for...
Keith's quote:
"I released a version of software, “6.00I” (for IFPA, I don’t remember what tournament it was for) or some such, that basically added some competition mode stuff (derandomized wild card and big spin). Those are the ONLY changes from 5.00 which is the last public release I did while at Stern. 6.00I was circulated a fair amount amongst tournament types, mostly those running tournaments. (I didn’t/don’t care.)
While doing crapwork on other games (like IJ4 and CSI) I had time to add some of the stuff I wanted to on WOF. Many bugs got fixed. Probably more speech. I gave a test version to 1 person that I trust unconditionally. I don’t remember what version I called it, but I don’t think it was 6.02. I don’t remember for sure, though. I’m not sure if he still has his WOF or not, but I doubt it’s this game.
As someone stated, the main gameplay change that is noticeable is that there are “mode goals.” The goal is simply to score x points before time runs out. If you get the goal, you won, great. The next mode, the goal would be higher. If you didn’t win, oh well, the next mode, the goal would be lower. Also, you could replay the mode you failed, at 2x points. If you failed the same mode twice, you could play it a 3rd time for 3x points. If you failed 3 times, the game gave up. Oh, also for each mode you won, you got a “winnings x” for that ball’s bonus.
IIRC there’s no logic for completing the wheel yet, but the reward was going to be something like 10M for each mode won on try #1, 5M for each on try #2, 2.5M for each on try #3, and 1M for failed modes. If by some unfathomable stroke of luck you completed every mode on the first try, you’d get a bonus to round up the total to 100M.
And that’s pretty much it. Oh yeah, puzzle solutions in attract mode, too. No one other than my tester and myself had seen the code until (I think) expo 2010. Trent wanted 6.0 for the expo tourney. For some unknown reason, I was contacted by Stern asking where 6.0 code was, 2 years after I had been laid off and several months after I had been left out to dry on a possible rehire. I said something to the effect of I have [no fucking idea], look on my computer. I guess instead of finding the 6.00I version that had been around for a couple of years, they decided to compile whatever I had done and left sitting on my computer (since I wasn’t allowed to check in any changes after getting the boot) and release that.
So, the existence of 6.02 is solely due to Stern, and not due to me. I still do not have a copy of 6.02; my game runs 5.00. I have no way of making or creating any version of WOF. Stern released it to Trent, and whatever happened after that is between Stern and everyone else, not me. Other than having done the work on it while I was still there, I have absolutely no connection to the released image of 6.02.
If anyone cares, no, [I don’t give a fuck] if 6.02 gets passed around or not. Maybe Stern does and maybe they don’t; you’d have to ask them"

Quoted from PinMonk:

Pinside or Craigslist?