Before I sold my F5, it was a version 01. I bought it new when they first came out and it had the plug in coils. I used it until a few months ago, and when I talked to Mike at FTP he said the F5 was up to Version 3 that took care of a few early problems. Not detecting silver dollars was one issue. They thought they had got word out to previous F5 owners, but somehow I slipped through. No big deal. When I sold the F5, Felix at FTP updated it and sent it on to the person (tnrob) that I sold it to. No charge.
I may have missed some silver dollars, but I am still a FTP fan. My F5 was still a great machine.