I just found out something very interesting. The LHS is shutting down due to health issues with the owner. He had an old Legacy 993 set in the box that had never been opened and gave me a great deal on it. I got it home and when I opened it I found only the 1.0 module and no silver dot. Oh Crud
I wrote Lionel for a RA to get the 1.0 fix done and I received an email back from Ohio. They told me that if I only had the CAB-2 and no base that needed upgrading it did not have to be returned to Ohio. This seemed counter to everything we had been told about the Legacy 1.0 fix so I was a bit perplexed.
They recommended going from 1.0 > 1.2> 1.3 then 1.51. Well since I had modified all my 1.0, 1.2 and 1.3 modules and put 1.51 on them I thought I was in trouble. Then I figured what the heck, go for it I installed 1.51 and it seemed to load just fine and appears to have all the 1.51 functions
Two things learned 993 Ver 1.0 Cab 2's do not have to go to Ohio, the fix must have been in the base. And it appears you can go straight from 1.0 to 1.51