Diablosport Forums

I removed the Tow tune from my 2007 Dodge Ram 2500 5.9 diesel so I could smog. After passing, I reloaded the Tow tune. I had problems with my transmission, and so I put the original tune back in. I still had the problem and ultimately had my transmission rebuilt. I just tried to load the tow tune back in, but it won't load with the Predator saying the tool is not licensed for the tune. Any ideas? Did the transmission rebuild change something? Thanks for any help. I have the U7131 version 9r07

sounds like it was not actually restored, and maybe the pcm was updated when the trans was rebuilt?
What does the device show for options/show last tune written?