I'm having some problems flashing my truck. It's a 2006 Dodge 2500 auto. I bought it with someone else's csp5 tunes on it but I bought my own v2 to build my own tunes. I flashed a stock 5553 tune and it worked fine and ran then shut off . So I then flashed it again with a tune with the correct Vin and I don't know what happened but it wouldn't take the tune. Now V8 won't won't read the ecu and won't flash it either. Now when you turn the key on the trucks lift pump just pulses and it will crank but not start.
Also the 4th light across on the v2 stays on.
I also plugged my smarty touch in to see if it'll read it and nothing. If you try and tune it with the smarty it says the ecm is not in application mode...
What happened? What's my next step?
Thanks.