I tried to update my predator from r-12 to r-30 and the hand held said no serial flash found. Now my computer will not talk to my hand held. How do I get back to r-12. Help

I was updating my predator from r-12 to r-30 and the hand held flashed No serial flash found. I tried to put back r-12 but now my computer dosent see the hand held now! How do I get my computer to see it? I have XP.

I have two dodge cars. One 2008 charger SRT-8. I have been working with Jashua at highhorse performance. Stage two cam and heads. Ported intake. Headers catback and so on. We are haveing issuse with air flow and stubility at low RPM ranges. Do you have any suggestions?

Also I got the new 2011 392 ...